How To Charge RV Battery With Generator | Guide 2022

If you are thinking about how to charge RV battery with a generator, then you probably need the right guidance. Charging RV batteries with a generator can be done through different methods. But it is necessary to follow some essential steps for the continuation of battery life.

The utilization of the deep cycle battery is thought to be ideal for a recreational vehicle as a power source. So, you should follow these few important instructions for proper maintenance of your RV batteries. Let’s jump right in.

Safety Tools:

You should have these tools before direct interaction with the battery.

  • Insulated gloves
  • Safety goggles
  • Insulated tools

RV Battery Maintenance Instructions:

Here are some of the primary instructions that should be considered before starting charging.

  • Firstly, you need to examine your camper battery to get rid of any fracture or erosion. The decayed components of your battery can decrease the battery life of your battery. Therefore, you should clean them carefully to obtain more power supply.
  • Secondly, a rusty or grime-filled battery dies more quickly, so wash away your battery with baking soda and distilled water mixture with the help of a bit of wire brush.
  • Lastly, pull off your 12V house battery cap and look over the gas or oil level. You can put distillated water in the liquid container to fill the line if the level is below the full line.

Methods of Charging RV Battery:

How To Charge Rv Battery With A Portable Generator?

Using a portable generator to charge RV batteries is a complicated method, but the portable charger quickly charges the battery. You can connect a portable generator with a three-stage portable battery charger for charging. The three-stage charger minimizes its power supply and regulates itself intuitively to stop the overcharging of the battery. This method involves the following steps.

Step 1:

Flip the battery and disconnect the switch of your RV battery to cut off the electrical connection of all other devices equipped with a generator.

Step 2:

Check your RV battery more carefully and get rid of all the disintegrated or rusty parts. The instructional booklet of the manufacturer can provide you with suitable information about it.

Step 3:

Fill up the gas container of your generator and allow it to run for nearly 3-5 minutes.

Step 4:

Connect your three-stage charger to the generator and keep waiting until the status lights are turned on to ensure that the system starts working.

Step 5:

Most RVs use a battery bank such that you hook up two or more batteries in parallel to use more energy. However, many RVs have a single battery in their structure. You should remove both cables from the two batteries if you want to charge the battery at a time.

How To Charge Rv Battery With A Charged Generator?

The charging process of your RV or lead-acid batteries is quite easy if you pay heed to these steps cautiously. A regular battery charging of your deep cycle batteries ultimately makes them able to operate at full capacity and last for an extended duration. So, let’s take a closer look at these steps.

Step 1:

Keep your generator fully charged, or it can be hooked up to shore power AC source.

Step 2:

Cross-check that the battery terminals of RV batteries are clean. You can wipe away any unwanted stuff to prevent corrosion of the battery. Use a mixture of soda and water for this purpose.

Step 3:

Look at the liquid level in the fluid container after removing the cap of your battery, and you can add distilled water to it to fill it to the desired level.

Step 4:

Switch off all the extra illuminated lights and operating electrical tools if your generator is directly connected with your battery’s electrical system. The charging cycle becomes faster consequently because more amp rating is delivered to the battery.

Step 5:

Hook up the generator with your RV battery in a strong manner and ensure that the generator is compatible with the battery’s system. Generally, it is considered that most RVs fully charge cycle completes within 2-4 hours.

How To Charge Rv Battery With Solar Power?

A large number of modern RVs use solar panels for charging operations. The solar panels produce DC power using sunlight and charge your RV house batteries. This process is not as efficient as the other methods are, but the panel is considered a cheap battery charger compared to the other ones.

Apart from this green way of charging batteries. You can use wind power also for this purpose. What you only need to do is just hook up a solar panel with a wind generator and supply energy to your RV house batteries.

Wrap Up:

Well, these are two main methods that guide you on how to charge the RV battery with the generator. You should follow the steps and safety instructions carefully so that you will not fall through any trouble while charging. 


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Yusuke Kohara
By Yusuke Kohara

Hi, my name is Yusuke Kohara. I'm a research scientist with 20+ years of experience in the battery industry. My knowledge and expertise has been applied to power electric vehicles, mobile electronics, and more! I am also a true car enthusiast. It’s not just about cars for me - it's about all things automotive! I enjoy helping others find their perfect vehicle by providing detailed buying guides as well as reviews on different types of batteries from various manufacturers across the world.


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