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5 Best RV Battery Chargers

Most recommended
BLACK+DECKER BM3B Fully Automatic
  • Item Weight 1 pounds
  • Polished
A good choice too
Foval Automatic Trickle Battery Charger
  • Small size 3.9 x 2.4 x 1.25
  • Intuitive LED indicators
  • Item Weight 10.6 ounces
A good choice too
Fully-Automatic Smart Charger
  • Similar to our G7200
  • Charge dead batteries
  • Beyond maintenance
Schumacher SC1280 15 Amp 3 Amp 6V/12V
  • Features 15A to charge and 3A
  • 6 or 12V batteries
  • gel and deep-cycle batteries
5 Amp 12V Automotive Smart Battery Charger
  • Voltage 12 Volts
  • Item Weight 1.04 pounds
  • Brand MEEARO

Choose the Best RV Battery Charger

Customer’s Choice: the Best Rated RV Battery Chargers

15 users answered this survey. Please help us improve this review!

53.33% of users selected BLACK+DECKER BM3B Fully Automatic, 13.33% selected Foval Automatic Trickle Battery Charger, 20.00% selected Fully-Automatic Smart Charger, 13.33% selected Schumacher SC1280 15 Amp 3 Amp 6V/12V and 0.00% selected 5 Amp 12V Automotive Smart Battery Charger. Every month we analyze your answers and change our rating.

An RV battery charger is a device that charges the battery of your RV. The deep cycle battery is the main battery that powers your RV appliances. The device charges this type of battery by converting AC power to DC current so it can be stored in them for later use.

The best RV battery chargers are often multi-stage, meaning they can take a low voltage and increase it as the charging cycle continues. This helps to avoid overcharging of your deep cycle batteries that is dangerous for them thus shortening their lifespan.

Reasons to buy RV battery chargers:

RV battery chargers can help you to save money and protect your batteries. By using the right device, you will:

  • Extend the life of your deep cycle batteries;
  • Save electricity by avoiding draining them too low; 
  • Prevent overcharging which damages the batteries thus shortening their lifespan;  
  • Save money on your electric bill;

It is important to choose the right device for your RV needs, so always check if it has all the features you are looking for in a battery charger before making any purchase. Also, look at how many amps it can deliver – more power means faster charging time and less electricity consumed by the unit itself which saves you even more money!

When buying an RV battery charger, make sure to do some research about its benefits and drawbacks depending on what type of deep cycle batteries you have installed in your vehicle (lead-acid or lithium-ion). You could also ask yourself whether you want a manual or automatic control mechanism as well as where to mount this accessory once purchased. All these things will not only help you make the right choice but also ensure the easy installation of your new battery charger.

Are you looking for the best RV battery chargers? If so, this guide is for you. A few RV battery experts are going to discuss 5 of the best RV battery chargers on the market today and also give their recharge times. To make it easier, experts will divide these products by individual features. Experts will start with the cheapest first and work our way up to more expensive models.

Table of Contents

BLACK+DECKER BM3B Fully Automatic 6V/12V Battery Charger/Maintainer – the Editor’s choice!

Charging your RV battery on the go can be difficult if you don’t have a charger. For times like these, the BLACK+DECKER BM3B fulfills all of your needs. With the DC plug, you can have your battery charged without opening the hood — saving you both time and labor.
Black + Decker uses pulse technology to monitor the charge of your battery so there is no more chance of overcharging or damage to it.

The versatility of this charger makes it suitable for every individual with engine types or connection preferences that are non-traditional because it automatically adjusts to fit them all.

The Black and Decker BM3B charger is a car companion that can easily charge your battery without opening the hood. The BM3B device allows you to choose from either 12 or 6 volts for charging your battery, depending on what type of engine you have. It also features rugged and long cables as well as sealed against water and dirt for convenience in all weather conditions!

  • DC plug is good for charging without opening the hood;
  • Overcharge protection;
  • Rugged and long cables;
  • Waterproof;
  • Can be used for versatile engine types;

  • It may heat during the charging;
  • Charges slowly;
  • Not designed for outdoor use;

This RV battery charger is the safest and most versatile car charger on the market. It comes with a DC plug so you can charge from inside your car, long cables that are resistant to grime and water damage and will not overcharge or damage batteries. This multifunctional battery charger is versatile for any type of engine configuration and connection preference.

Foval Automatic Trickle Battery Charger – the best for 12V batteries!

The perfect and easy way to charge your RV battery in no time! The Foval Trickle Charger is small, compact, and portable. It’s ready-to-use right out of the box with an all-purpose 12V battery charger for any vehicle.

This charger is waterproof which ensures safety when around water or similar environments. It has a long power cord for added convenience that gets the job done easily.

This unit will charge up a completely discharged electric or diesel engine battery in as few as 22 hours – with no overcharging. Get charged up with this simple and efficient auto-trickle battery charger by Foval today!

  • Quick and productive;
  • Small and portable;
  • Long power cords;
  • Waterproof;
  • All-purpose chargers;

  • Doesn’t show the charge voltage;
  • Not very powerful (1A current);
  • Only for 12 Volt batteries;

This charger is perfect for people who have to drive around a lot and need power. It’s also simple and easy-to-use, with a small design that makes it portable. Get your 12V battery ready in no time with this Foval RV charger!

NOCO GENIUS10 10-Amp Fully-Automatic Smart Charger – the best for different battery types!

The adjustable voltage settings of the NOCO GENIUS10 include 6V, 12V, 12V AGM, and 12V Lithium. The adjustable charge rate lets you do things like speed up charging during low load periods to save you time when you get busy. If your battery isn’t responding it might be bad luck, but if it’s just slow then this battery charger will help provide the boost!

This compact 10-amp fully automatic smart charger has an LED status interface that notifies with 3 color indicators to show if your battery is charged or charging. With overcharge protection and a rugged aluminum housing makes sure this product won’t let you down.

  • Advanced and reliable;
  • Good for different battery types;
  • Portable and small;
  • Overcharge protection;
  • 3-year warranty;
  • A 3-color charge indicator;
  • A dynamic battery tracking function;

  • Pricey;
  • Only 1A charge;
  • Not water-resistant;
  • Takes about 17 hours to charge a battery;

It isn’t always easy to find the right charger for your automotive needs. With all the different brands and styles out there, it may be tough to know what’s best without some help from experts. The NOCO GENIUS10 smart charger gets you back on track with any kind of battery! Also, it has overcharge protection so you don’t have to worry about frying or damaging your battery while it charges.

Schumacher SC1280 Fully Automatic Battery Charger and Maintainer – the best display!

The Schumacher SC-1280 charger and maintainer is the perfect solution for anyone who wants to save time, money, and most importantly their sanity. This 12V/24V charge will not only repair your battery but can be utilized in a variety of different settings including an enclosed carport or under a carport shade.

An advanced LED display that clearly shows when you are charging or maintaining has never been easier to read before! You’ll also enjoy the ergonomic handle when carrying without sideway force and hard molded plastic when carrying heavier loads with both hands on top of each other.

The LED display allows you to monitor the charging process with ease. It detects 6V or 12V automatically and can be set to allow it to do its job, no supervision is needed!

Also, it can be ideal for drivers who appreciate the value of time. With its two settings, you can also charge your battery while driving.

  • Great display;
  • Portable and lightweight;
  • Good for marine batteries;
  • Has suction cups;
  • Many functions;
  • Easy to read;
  • An ergonomic handle;

  • Loud internal fan;
  • Rapid charge glitches;
  • Plastic components are flimsy;

The SC1280 unit is an easy-to-use car battery charger that can charge in your car. It is very lightweight, portable (with suction cups), and has more functions than most chargers of the same price range. This product with a large LCD does not only charge but also maintains batteries for up to 24 months without needing recharging!

MEEARO ‎EE0035 Automotive Smart Battery Charger/Maintainer – the best for different charging methods!

The MEEARO ‎EE0035 charger is an innovative time-saving device that lets you charge car or truck batteries faster, safer, and smarter than ever before. With this smart 3-stage charger, your battery will automatically switch charges to trickle charge when it’s fully charged; no more guessing if it’s done charging.

Simply press the button on the LCD screen anytime to see the charge! This easy-to-read LED will tell you what type of build-up your battery may have with just a glance.

Formulated with brand new technology, this device has high-frequency automatic charging for almost all types of batteries (but not Lithium-ion).

  • The screen is easy to read;
  • Many safety features;
  • Quick charging;
  • You may check the battery charge without a multimeter;
  • Suitable for many battery types;
  • 3-charging system;

  • Not for Lithium-ion batteries;
  • Short cables;
  • Flimsy plastic connectors;

The MEEARO can charge your car battery, or maintain it as well! It’s very easy to read the LED screen. The safety protection is extra safe, and it comes with a warranty as well as for instructions for installation. Just connect this device to your car’s cigarette lighter and off you go on a fast-charging ride.

The Buyer’s Guide

Benefits of an RV Battery Charger:

They extend the lifespan of your RV batteries

They can prevent your batteries from being drained. An RV battery charger is a great choice for keeping your car powered while you are camping so that it will start up when you need to leave the campsite. Most of them have multiple charging options and settings available, allowing you to choose what type of charge would be best suited for your needs. 

You should also opt-in for an automatic shut-off feature if possible. This way, even if there is no power left on the battery itself (or none at all), the device automatically shuts off after fully recharging whatever remains within it. This particular type of charger saves energy as well! 

They ensure that your electrical appliances are running

An RV battery charger is also a perfect tool for those who wish to ensure that the appliances in their vehicle work as well as they could. If you notice certain electrical problems occurring within your car, such as lights dimming or flickering when using specific electronic devices (or even turning off suddenly). Then it might be time to look into investing in one of these chargers – specifically designed to keep all sorts of batteries fully charged at all times so that appliances can continue running smoothly much longer than before!

They give you more travel options

Since an RV battery charger is a very convenient type of device, it can help you to choose from different travel routes or destination points. If your car’s batteries are fully charged and working as they should be, then the only thing that stands between you and other destinations is having enough fuel in the tank – which might not always be possible if your vehicle gets stuck somewhere far away from any gas station!

An RV battery charger gives you more options than just simply relying on one mode of transportation for all sorts of journeys. This way, even if there is no power source nearby (or none at all), you will still find ways to keep going provided that your electrical appliances work properly. You won’t have to worry about finding some way to charge your appliances or getting stranded on the side of the road somewhere.

Types of RV Battery Chargers:

1) Converter Charger:

This is the most basic type of RV charger. It’s built into your camper and typically will have settings for 12 volts, 24 volts, or both

The converter is what you use when plugged into shore power at an RV park which means that it uses AC current from a hookup on the outside of your rig. Converter chargers are not appropriate for dry camping (when you’re boondocking without electrical hookups) because they can’t produce enough amps to keep up with demanding appliances like air conditioners or microwaves—and using them off-grid would drain your battery too quickly. If all you need is batteries charged while parked near water and sewer connections though, this could be OK for occasional use if it fits within your budget.

Converter chargers work well in most cases, but if you’re planning to use your RV extensively while dry camping (off-grid), you’ll want a more powerful battery charger. 

Another reason to upgrade is that converter-type units do not typically offer any kind of voltage regulation or power filtering which can lead to low AC output and spikes through sensitive electronics inside your camper.


  • Built into your RV (no extra equipment);
  • Works well in most cases, especially when plugged into shore power;
  • Some models can power 120-volt appliances in the RV when plugged into shore power;


  • Not powerful enough for dry camping or off-grid use;
  • Limited capacity for off-grid use; 
  • AC power only, no voltage regulation or filtering;

Converter chargers are best suited for RVs that will be used mainly near water and sewer connections, but they’re also convenient to have around just in case. For example, during an emergency where electricity is out at home too so your inverter doesn’t work either. They won’t typically meet demands of heavy use off-grid though unless you upgrade them later down the line which isn’t difficult to do.

2) Inverter Charger

This is the second type of battery charger for your RV. It can power 120-volt appliances when plugged into shore power or produce electricity through an inverter (AC current) while on-grid with a generator, solar panels, etc. This means it has voltage regulation and filtering which protects sensitive equipment inside your camper from low AC output or spikes coming from connections to outside sources that don’t have any kind of built-in protection like converter chargers do. 

Inverters are perfect for use off-grid too because they’re more powerful than converters plus you get additional advantages – you can run 12/24 VDC systems directly either by plugging them in or powering them through available outlets without having to convert the voltage first so this saves a lot of power and makes them efficient.

Inverter chargers typically require little maintenance, but if you leave it on all the time or don’t use certain settings like DC output from your inverter charger for too long without using AC appliances in between. There is some risk that it could burn out eventually. 


  • Powerful enough for daily use in dry camping (off-grid) and can run sensitive equipment off-grid too if you have a high-quality inverter charger;
  • Can run 12/24 VDC systems directly without having to convert the voltage first with some models;
  • More reliable than converter chargers because they offer built-in protection against low AC output and spikes which can damage your RV’s appliances, sensitive electronic devices like TVs or radios, etc.;


  • Still not as efficient or powerful as a generator for off-grid daily use, but an inverter is much more convenient;
  • The use of high wattage appliances from an inverter can shorten the life span of your batteries;

Inverters are best suited for those who need to use their RV off-grid daily or on occasion but don’t want to deal with a generator as much as possible. You may also consider getting one if you have large AC demands in your RV which might be difficult to meet efficiently without upgrading both converter and battery quality/quantity at once.

3) Solar-Powered Charger

Solar-powered battery chargers are a very popular option for those who like to go camping in the outdoors and want to recharge their batteries without having access to shore power or generator electricity. 

Solar panel sizes vary with different models so make sure that you get one big enough (in watts) if your goal is recharging quickly compared with using it solely as an emergency backup while plugged into 120VAC wall outlets at home. This type of charger usually has some kind of advanced technology built-in called MPPT (Maximum Power Point Tracking), which automatically adjusts voltage to maximize power gathering efficiency, so you don’t have to worry about that—all you need is sunlight.


  • A simple option for off-grid charging without expensive generator use or upgraded converter/battery bank;
  • Solar panels can also be easily installed on RVs with no extra equipment necessary;
  • Cheap option in the long run;


  • Solar panels aren’t very useful in low light conditions or on cloudy days; 
  • They’re still not as efficient or powerful as inverter options;

This type of charger is best used for those who want to go camping in the outdoors and don’t mind spending a little extra money over time on higher quality solar panels to recharge their batteries. 

It is also good because they can be installed directly onto your RV with no other equipment necessary so you won’t have anything else added to your rig that could potentially damage sensitive electronics like TVs, radios, modems – or worse yet an expensive converter/charger unit! In addition, this option is cheaper long-term than upgrading converters plus batteries at once which would cost more money. 

4) Trickle Chargers

Trickle chargers are relatively cheap because they don’t have all of the extra bells and whistles compared with other types, but you get what you pay for in this case. They’re best used as a temporary replacement until your batteries can be properly reconditioned/rebuilt or replaced if completely dead. 

Do not use these kinds of chargers on any kind of sensitive electronics such as modems, TVs, etc., because it can damage those components due to high voltage output (upwards of 14+ volts) that bypasses battery regulation circuits.


  • They’re good for occasional use;
  • It’s still cheaper than buying a whole new bank of batteries at once with an inverter charger option which can cost upwards of $1500;
  • They are more efficient for 12V batteries;


  • Not very efficient at all compared with inverter chargers;
  • They can’t be used to fully recharge batteries either;
  • They are best used as a temporary replacement;

Trickle chargers are good for maintaining battery capacity level during storage periods whether that’s overnight between trips or seasonally depending on how long you take off from camping. It’s also good for occasional use like tailgating, picnics, or camping for a weekend with friends/family.

Trickle chargers are also great as emergency backups for people who live in areas where frequent storms happen during certain seasons.

Single-State Charger Vs. Multiple-State Charger:

1) Single-State Charger

This type of charger is the simplest, has no controls to adjust it, and offers a single mode for charging. The standard voltage provided by this kind of battery charger is 13.0 VDC or 14.0VDC with an amperage that varies from one unit to another but usually within the range of 0.75 amps up to 15 amps (for each battery). 

These devices will not “pulse” meaning they charge batteries in only one way that sometimes could be bad news if your batteries need other special conditions when being charged.

The good thing about these chargers is their price tag – you can find some models at $30-$50 depending on their features so they are perfect for someone who wants something simple without worrying too much about the price.

If you are looking for something lightweight, small, and very inexpensive then this type of charger is perfect for your needs but keep in mind that it will not be able to accommodate different types of batteries at once.

2) Multi-State Charger

This type of charger is a little bit more complicated in terms of its controls and settings but let me assure you that they are the best ones to have.

These chargers allow users to monitor each battery separately which means it can be charged at specific rates depending on what your batteries need (like 0.75 amps, bulk charging mode, absorption mode, and float mode). 

They also offer adjustable amperage from as low as 0.25 amps up to 40 or 50 amps per channel so these devices would work for almost all types of 12V lead-acid batteries out there including AGM/Gel Cell Batteries. 

They usually come with 4 independent channels but some models might provide eight or ten different channels which makes them perfect for large RVs or boats.

These chargers are a little bit more expensive than single state chargers but that’s only because the latter provides fewer features and therefore allows manufacturers to sell them at very low prices ($30-$50). They would cost around $90-$120 depending on what kind of design it comes with.

If you own an RV, camper, or boat then experts highly recommend getting one that offers 4 independent channels as that would be more than enough for you to use. However, if your RV or camper comes with a house battery as well then experts recommend getting one with at least 6 independent channels (and of course 12V output) because those will allow you to charge all batteries separately which means they are the best out there in terms of flexibility and convenience.

Main features:

Vibration Absorption

The RV battery chargers with vibration absorption feature will steady the current and voltage, preventing damage to your vehicle’s electrical system. This is especially important when driving on bumpy roads or at high speed (such as interstate). If there is any risk of interruptions in the power supply, make sure you choose an automatic power restore function. 

There should be no sudden changes in the current flow – this might cause overheat and shorten the lifespan of your batteries. The best option would be a digital display that shows what percentage of charge has been reached and how much time it takes until the full charging level is achieved. 

Charging Level 

The charging process is monitored by camper battery chargers automatically. Some models will stop the current flow when your batteries are fully charged, while others have a timer to prevent overcharging and preserve their lifespan for as long as possible. As it was mentioned earlier, an automatic voltage regulator (AVR) functions in conjunction with high-quality components

The best RV battery charger should be equipped with reverse polarity protection – this means that there’s no way you can connect the wires incorrectly and damage or destroy your equipment because of low-quality materials used in building them. Those units that come with additional features such as LCD displays and multi-functional remotes also deserve special mention because they provide more accurate readings than those without these additions.

USB Ports 

If you want your battery charger to be an all-in-one power solution for camping, pick one with USB charging outlets. These are perfect if you need to use portable devices such as smartphones or tablets during the trip

They’re also ideal for other needs – just make sure that there’s always enough current available even when something else is plugged in at the same time. 

An important thing worth mentioning is how many amps can be used by connected gadgets because this will determine their speed of recharging (i.e., it takes more time than usual). Keep in mind that most cars don’t have a powerful enough wiring system so they should never be connected directly without first passing through an RV battery charger/converter unit.

Battery Capacity

The battery capacity is the most important parameter. Make sure your RV’s batteries are compatible with the charger that you want to buy. If they aren’t, it may cause problems or even damage them – especially if they have a larger capacity than required for charging by your best RV battery chargers. 

It’s also important to consider the charging current. If you have multiple batteries in your vehicle, make sure they are charged one by one or simultaneously depending on the capacity and power supply capabilities of the battery charger. 

If you want a product that works for both 12V DC and 110 V AC input voltage, it should be mentioned in its specification sheet. 

It is also advisable to check whether it has low-voltage protection features if possible – this will prevent any sudden damage when used with smaller batteries (such as motorcycles). There might even be some problems with larger ones too – especially when not being plugged into an outlet while driving making them more susceptible to running down completely.

Some of the best recommendations use pulse technology that provides more effective charging and a longer lifespan of lead-acid batteries (AGM/Gel). Modern digital displays show accurate results so you don’t need any professional training to choose an automatic power restore function. This feature is very useful on long trips because there will be no risk of overheat due to prolonged discharging time between charges. 

Voltage Power Supply

The best RV battery chargers are usually equipped with an automatic voltage control system. This means that they will adjust their output to match the input of your vehicle’s electrical system (12V DC, 24 V DC, or 110/120 AC). 

Make sure it is compatible not only with different types of batteries but also other devices you might want to power up while on a trip – such as lights and fans for example. It should be mentioned in the specification sheet if there is compatibility with various charging modes (mainly 12/24 V, 14.40-14.80 V, and 18-20 V) which makes them suitable even for use by professionals like mechanics or carpenters who need stronger current supply than average users would ever need.

Top Brand Options

The best RV battery chargers are usually made by reputable companies that have been in the industry for many years. The most commonly used brands are ProMariner, Black + Decker, NOCO, CTEK, and ACDelco – all of them have models with very high customer ratings on Amazon which makes them stand out from other options available. 

These recommendations are suitable not only for recreational vehicles but also boats, caravans, or even motorcycles because they can be easily installed anywhere without taking too much space making them easier to use while traveling

In any case, make sure you know what type of battery your vehicle requires before paying attention to the technical characteristics. Some products are suitable only with lead-acid batteries whereas others can be used even by people who have lithium-ion or AGM/Gel batteries that make them more versatile and useful in a wide range of situations. 

RV Battery Charger Pricing

The recommended products are all available for less than $200 that makes them affordable even to users on a tight budget. However, it is important to know that the more expensive options come with additional features like a built-in air compressor and LED flashlight (which might be very useful in emergency situations) or an LCD display providing accurate voltage levels at any time

Some of these devices can also charge your car battery as well so you don’t have to buy another separate product if you want something suitable both for RVs and cars – just make sure it has enough power supply capacity before deciding whether this feature would be useful during long trips. 

Other Considerations

It is important to know that most of the best RV battery chargers are made with a solid and durable design but they can still break if dropped on a hard surface (accidents happen) or exposed to extreme weather conditions like heavy rains which might also influence their functionality. 

Some of them come with a warranty but it is recommended to check the specification sheet before choosing one as some products have shorter coverage periods whereas others offer lifetime warranties.

There should always be enough space for ventilation around them so make sure you mount them in places where proper air circulation is guaranteed without placing anything too close by – this will help prevent overheating problems after prolonged use.

One thing that many people forget about when purchasing an RV or motorhome is how much space they will have available once all their belongings are placed inside the unit! This can lead to them buying too small a model since it doesn’t look like it takes up much room but then find that they end up having to leave many things behind because it simply won’t all fit in such a small space. 

Another common issue with people who are new to RVs is that they don’t realize just how much electricity their unit will use during the day while driving down the road and tend to buy too small of an inverter which then leaves them without enough power throughout each day. This can be extremely frustrating for anyone who isn’t prepared for this! 

It’s also important not only to have more than one battery but also to make sure you purchase ones that are powerful enough so your RV doesn’t completely run out of juice, leaving you stranded on the side of the highway or worse yet stuck inside due to lack of air conditioning or heat!

Many people assume that the battery charger for their RV will last forever but this is one area where you definitely get what you pay for. If your unit requires more power than a smaller model can provide, it’s important to look into higher-end models

Tips for Users of RV Battery Chargers

  • It is recommended to always read the instruction manual carefully before using a new product for the first time;
  • Always connect your RV battery charger directly into an AC power outlet or Campground electrical box (12/24 volt) because it can seriously damage its circuitry if connected incorrectly; 
  • Some models come with reverse polarity protection but it’s always a good idea to double-check the wires before connecting them into your RV battery charger or 12/24 volt power outlet;
  • Keep in mind that a battery should never be left on the charger for too long without being used. This can cause damage to your RV house batteries and lead to them not holding a charge well over time;
  • Remember this when you are using an automatic or smart charger so as not to leave it plugged in all the time, but only every now and then in order to keep your battery fully charged while at home or not using it for months at a time like if you’re storing away your camper between trips;
  • Bear in mind that some of these devices are designed for occasional indoor use only. Don’t leave them outside if possible as they might be exposed to harsh weather conditions which can affect their functionality although most manufacturers claim that their products have been properly sealed against rain and other kinds of outdoor elements;
  • The warranty usually does not cover malfunctions caused by water damage so you should also try keeping these devices away from pools, ponds, and other open water sources;

Caring for RV battery chargers: 

  • Plug the charger into a standard outlet, not a generator;
  • Be sure to turn off your converter before hooking up or disconnecting any charging cables from the batteries. It’s also a good idea to disable it while you’re boondocking as well – use your inverter instead if necessary for battery recharging;
  • If you are planning to leave your RV for any length of time, be sure that everything is turned off and disconnect the battery cables;
  • Don’t leave your lights on overnight. If you need something lit up for safety purposes, use a red light bulb instead of the white that is much more expensive and wastes electricity;

RV Battery Charger Indicators

This table presents various indicators related to RV battery chargers. It includes charging speed, charging modes, compatibility, and safety features.

Indicator Description
Charging Speed The rate at which the charger can replenish the battery’s charge, typically measured in amps (A).
Charging Modes The number of stages involved in the charging process, which affects the thoroughness and efficiency of the charge.
Compatibility The types of batteries supported by the charger, such as gel, AGM, lead-acid, and lithium-ion.
Safety Features Various protections and safety measures incorporated in the charger to prevent damage or accidents.

The table above provides an overview of the different indicators related to RV battery chargers. These indicators are crucial to consider when selecting a charger that meets your specific requirements and ensures optimal performance and safety for your RV’s battery system.

Note that the table does not compare specific charger models or products, as its purpose is to highlight the key indicators to consider rather than evaluating specific options.


What amperage should you charge my RV battery?

A typical RV battery is often 36 amp-hours (Ah) capacity. If you are using solar or a generator to charge it, then you should use a charger that has an output of at least 4 amps per AH for up to 100 AH batteries and twice the AMP/Hr rating above 100 AH. 

For example, if your battery is 270 Ah, select a device with an output between 20 and 30 amps. If it’s 540Ah choose one with a 40-60 amp rate. It may be best to err on the side of caution, however – many users report success charging their units faster than specified by manufacturers without any problem occurring! 

What amp charger is best for a deep cycle battery?

Amp chargers vary based on how much power is needed to charge a battery. For example, if you have a 12V 100AH deep cycle battery that requires 20-30 amps of charging current then it would be best for an amp charger with at least 25 amps output capacity.

Your RV may require additional equipment such as inverters and converters so the total wattage needs of your system should also be considered before buying any portable or fixed unit. 

In general, opt for higher amperage units since they tend to cost more initially but will perform better over time by taking less time to recharge your batteries faster than lower amperage ones can do.

How do you keep your RV battery charged?

Here is what you may try:

  • Use a battery charger when you are stationary for longer than overnight. If your RV is hooked up to grid power, use an automatic battery charger with the auto-start feature. It will ensure the best possible performance of your batteries without overcharging them;
  • Turn off all electrical devices, not in constant use (i.e., water pump). Even if they are turned off, some appliances like microwave ovens draw current unless unplugged; most RVs have low amperage fuses that prevent the circuits from drawing more amps than they should;
  • Do not let anything run on DC while plugged into AC shore power or auxiliary house batteries (including fans and refrigerators). The inverter/charger must convert incoming 120VAC voltage down to the 12V DC voltage your appliances need; you’re essentially stealing usable power from yourself if anything else is running on the inverter/charger;
  • If plugged into AC shore power or auxiliary batteries, run electrical devices off of an inverter;

Is it better to charge a battery at 2 amps or 10 amps?

It is better to charge a battery at the rate it needs. For example, if you need your RV batteries and they require 6 hours of charging time, then it will be best to charge them at no more than 2 amps per hour. If you want faster results or have multiple batteries that need to be charged, use higher amperage rates such as five amps per hour up to ten amps per hour depending on what your charger can handle safely. 

How do you charge your boondocking RV battery?

There are many different types of battery chargers on the market, and not all will work well with your boondocking power system. One important point to keep in mind is that most RV batteries use a specific type of charger called “smart” or “intelligent” (or sometimes just: automatic). This means they require special attention because you need to give them an input voltage range anywhere from about 14.0-14.75 volts. Otherwise, their charging cycle shuts off automatically after at least 20 minutes for safety reasons! 

So how do you make sure the charger does not shut off? One option is to buy a multi-stage smart RV battery charger that has both automatic start/stop functions as well as auto voltage detection. This will allow it to automatically adjust its input voltage range so if your generator or solar power system output varies during use then at least one of these features should keep the charging current flowing uninterrupted! If you want even more safety measures for your boondocking, another great solution is an intelligent monitor along with a separate inverter/charger. 

These are typically used by full-timers who have large banked batteries or extra wiring on their rigs for connecting additional electronics when not hooked up to shore power. These monitors also allow you to monitor battery voltage and charging current so if one of your smart RV battery chargers shuts off, the monitor will sense this and immediately take over the charging process!

How long does it take to charge a deep cycle battery at 15 amps?

It takes around 14 hours to fully charge a deep cycle battery at 15 amps.  The time will vary, however. It depends on the charge of your battery and how deeply it has been drained before charging. Also, check that you are not using a higher than recommended amperage to charge the deep cycle batteries – this may cause them to overheat and damage them permanently.

Can you use an automotive charger for your RV battery?

You can only use an automotive charger if it is specifically designed for both types of batteries (automotive and deep-cycle). If you want to be sure, look at its manual or contact customer service; they should tell you whether their product fits your needs as well as those of recreational vehicles (RVs), boats, etc.

What size battery charger do you need for your RV?

There are two major types of RV batteries: 12-volt and 24-volt. If your battery is a 12V, you need to purchase a charger that is between four and ten amps depending on the size of your battery bank (number of batteries). 

A typical generator produces 8 amps so if yours does as well, then this would be sufficient for your needs. For larger RVs with bigger systems or those running multiple appliances at once, look into getting an inverter capable of producing more power than what it takes to charge the batteries in order to avoid discharging them when they’re still full from being charged earlier by the generator. 

This will also allow you to use certain tools without having problems with overloading the system since generators aren’t able to produce the same level of power as an inverter.

If your battery is a 24V, you need to purchase a charger that’s between 8 and 30 amps depending on the size of your battery bank (number of batteries). 

What type of battery charger is best?

All of the chargers reviewed are smart, multi-stage battery maintainers. This means that they will keep your RV batteries charged without overcharging them and boiling out electrolytes as some old single-stage car battery chargers could do. Smart charging prevents damage to expensive deep cycle marine/RV batteries that can be ruined by frequent or improper charging.

What is the difference between marine and automotive RV battery chargers?

The short answer is yes! Marine-style charger panels include more safety features than an automotive-style one: reverse polarity protection (prevents sparks and shorts), spark-proof technology (prevents sparking at all connections), and electronic current limiting (to prevent overheating). While it’s not necessary to get a marine-style RV battery charger, you should consider it if your storage area is subject to high humidity or water intrusion.

Marine/RV style chargers also use brass terminal connections that are not only more durable than the typical automotive connectors on an RV battery charger but they won’t corrode like copper pennies when exposed to moisture. 

If you know there’s any chance of getting spilled liquids near the batteries (or in them) then go for one of these chargers instead. Also keep in mind that while some may claim ‘marine’ quality, this doesn’t necessarily mean waterproof – be sure to read product descriptions carefully before buying! 

Can a trickle charger ruin a battery?

No, a trickle charger can’t ruin your battery. It does just the opposite. It recharges the battery and keeps it fully charged. 

Does an RV generator charge the battery?

Yes and no. A generator will only charge the battery while it is running, which means you cannot be using all your appliances at once. The more things plugged into the same circuit, the less alternator power available to keep that battery charged up. 

For example, if you plug an extension cord into a 30 amp outlet on your RV or if there are too many lights on inside the camper, then this can potentially cause problems for keeping batteries charged properly when connected to a generator. 

Is it safe to leave the battery charger on overnight?

It is safe to leave the battery charger on overnight. However, if you are planning to do this then it’s important that you choose a product with an auto-shutdown feature like those experts recommended above. This will ensure your batteries never overcharge and cause damage as well as reduce energy consumption (which saves money).

Does your camper battery charge when plugged into a truck?

Yes, if you have an auxiliary battery in your truck. It is recommended to leave the camper plugged into the vehicle when not driving or using it for best charging results. If this is not possible then unplug the power cord when finished and don’t drain it below 50%. 

Why does your camper battery keep dying?

If you are often facing the problem of dead batteries while camping, it is because your battery isn’t being charged properly. There might be a number of reasons for this lack of charging like – not turning off appliances when they aren’t required immediately or leaving headlights to drain out even if you will return back after some time. But one thing which can help you get rid of these problems permanently is getting an RV battery charger for your camper vehicle.

What are the different types of RV battery chargers available?

There are three main types of RV battery chargers: trickle chargers, smart chargers, and converter chargers. Trickle chargers provide a low, constant charge to maintain the battery’s charge level. Smart chargers are more advanced and can adjust the charging rate based on the battery’s condition. Converter chargers are typically built into RVs and convert AC power from an external source, such as a generator or shore power, into DC power to charge the battery.

How does a smart RV battery charger work?

A smart RV battery charger uses advanced technology to monitor the battery’s voltage and adjust the charging rate accordingly. It can detect the battery’s condition and deliver the optimal charging current to ensure efficient and safe charging. Smart chargers also typically include features like automatic voltage detection, charge maintenance mode, and temperature compensation.

What is a multi-stage charging process in RV battery chargers?

A multi-stage charging process is a method used by RV battery chargers to charge the battery efficiently and prolong its lifespan. It typically consists of three stages: bulk charging, absorption charging, and float charging. During bulk charging, the charger delivers a high current to rapidly charge the battery. In the absorption stage, the charger reduces the current and maintains a constant voltage to fully charge the battery. Finally, during float charging, the charger provides a low-level maintenance charge to keep the battery at full capacity without overcharging it.

What is the purpose of a battery maintenance mode in an RV battery charger?

Battery maintenance mode, also known as float or trickle charge mode, is a feature found in many RV battery chargers. When activated, this mode provides a low-level charging current to the battery, which helps counteract self-discharge and keeps the battery at its optimal charge level. It is particularly useful for long-term storage or when the RV is not in use for an extended period, ensuring that the battery remains charged and ready for operation.

What is a battery desulfation mode in an RV battery charger?

Battery desulfation is a process used to remove sulfate crystals that can accumulate on the battery plates over time, reducing its capacity and performance. Some RV battery chargers feature a desulfation mode, which applies specific voltage pulses or waveforms to break down these sulfate crystals and restore the battery’s efficiency. This mode can help revive weak batteries and extend their lifespan.

Can an RV battery charger be used to charge other types of batteries?

Yes, depending on the charger’s specifications and compatibility, an RV battery charger can often be used to charge other types of batteries, such as car batteries, marine batteries, or deep cycle batteries. However, it is essential to check the charger’s documentation and make sure it is suitable for the specific battery type you intend to charge.

What safety features should I look for in an RV battery charger?

When choosing an RV battery charger, it is important to consider the safety features it offers. Some common safety features include reverse polarity protection, short circuit protection, overcharge protection, and temperature compensation. These features help prevent damage to the battery, charger, and surrounding equipment, ensuring safe and reliable charging.

Useful Video: Best Deep Cycle Battery Charger

Final thoughts

The experts hope that this guide will help you find the perfect RV battery charger for your needs. Which products did they recommend? One of them is a solar-powered product, another has an LCD screen and two-year warranty, while yet another can charge up to three different batteries at one time! There are so many options for everyone. Have any thoughts on these models or other ones they’ve missed?