How to Charge RV Battery from Vehicle In Easy way! 2022

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It is annoying as well as disturbing to deal with a nearly deceased battery when you’re in the middle of the journey or enjoying camping. Your motor home or RV battery needs regular maintenance and recharges to function fully.

RV or recreational vehicles are trailers with campervans. Almost all household facilities are available with these vehicles. However, one needs a good amount of power to run all the amenities available in an RV. Let’s try to find out how to Charge RV Battery from Vehicle. When on the go you need a lot of things to get powered in an RV.

RVs are a way of life. And need enough power to keep them running. Here’s a simple and straightforward way to charge your RV battery from a vehicle that may help you solve the problem.

Charging RV Battery

How To Charge RV Battery From Vehicle 6 Step!

Among the various ways of charging a campervan or RV, we present here one with a vehicle, which is the handiest way you can find out there.

how to charge rv battery from vehicle

Since all the facilities in an RV are only available when your battery is fully charged, it may seem difficult to keep it charged when running. But you can charge the battery with the truck it is attached to. So, follow the easy steps given below-

Step One: First of all, park both the vehicle and the RV close enough to do the charging. Also, do set the emergency brake to prevent accidents.

Step two: Check your battery connections if they are loose because a loose connection can make the battery seem dead while it is not.

Step Three: Keep the car or the charging vehicle running while all the electronic devices on your RV are plugged off. Set the emergency brake of the RV to prevent any occurrences. You need to make sure they are turned off before you start charging the RV battery

Step Four: Now as you’ve made sure all power to the RV is turned off, let’s move to the next step. Open the car’s hood that you’ll use to charge up the RV battery and remove the caps from the RV battery.

Step Five: Now you, of course, need jumper cables to do the job. Attach one red clamp to the positive pole of the RV battery that has a plus (+) sign on it and another one to the positive pole of the car’s battery. Another way to learn which one is positive is the color red.

Step Six: When done, take the negative clumps of the jumper cable to attach them to the negative poles of the car and RV battery. Be cautious of the fact that clumping them to the battery may cause sparks. The negative pole is black-colored.

Step seven: Run your car as long as the RV battery is fully charging. Then remove the clamps. First, remove the RV battery and then the car battery. With the red one, the order would be the same.

Step Eight: Put back on the battery caps you took off earlier as you now have a charged RV battery.

Rv Batteries Tips Longer Batteries Life!

How To Take Care Of RV Batteries

You need to check on your RV battery from time to time to keep it running smoothly. Because every time it takes patience to deal with an almost dead battery. Sharing some useful tips and tricks to make the work easier for you.

  • Keep the battery dirt and damage-free.
  • While charging let not get the temperature to exceed 120°F.
  • Do a routine check-up of the batteries of your recreational vehicle as known as RV.
  • Keep the cables intact as there are chances of getting electrocuted from damaged cables.
  • When working on an RV battery, make sure you’re using insulated tools to prevent accidental situations.
  • Always use distilled water instead of tap water to replenish the battery. This is necessary to ensure that there is no contamination. As tap water may contain minerals and other contaminants.
  • If the plates of the battery are exposed then fill about ⅛th inch of it with acid before you charge it.
  • Water the batteries after charging them.
  • Always use a matching charger for your batteries. Make sure that there is no defect in the charger. Otherwise, it will lead to serious damage and also reduce performance.
  • Keep your RV battery clean from corrosive materials. Use baking soda and water to make a paste and with a wire brush clean it properly. Then wipe off the dirt with a clean rag. Lastly, apply petroleum jelly or any greasing material to prevent further rusting.
  • If there is a sign of a bad connection, check all the cables and grounds thoroughly.
  • An older battery needs frequent maintenance than a newer one. Moreover, it may need longer time to recharge and frequent watering. And not to forget, the capacity of a battery decreases over time.
  • Do not neglect or ignore when your battery needs a replacement.

Safety Tips

  • Wear thick gloves when working on electric devices or with dangerous chemicals.
  • Use insulated tools to get rid of any unintentional occurrences.
  • Be extra cautious when using plugs or cables that are not covered properly with a rubber insulator.

Is there any problem to charge the car with an RV battery when the car engine is hot? We charge the battery in the car while it is moving. So we need to take care of everything in the car.


That’s all for now. This was a fun, but slightly challenging and technical blog post to write. I hope you enjoyed it. Let me know what you think and if you’d like to see any more of these posts. Thank you for reading.

It may seem a bit complex, but try to follow it consciously to charge your RV battery from a vehicle. Keep all your tools and machines clean as it is quite important for a good power flow.

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