Can I Jump an RV Battery with My Car?

When traveling in an RV, you rely on your battery to power your lights, water pump, and other appliances. When your RV battery dies, it can be a huge pain to get it jump started again.

In this situation, one of the most common questions is “can i jump an RV battery with my car”?  The answer is “No”; you can’t jump-start an RV battery with your car. However, there are a few ways to jump-start an RV battery without using your car.

In this blog post, we will talk about the negative effect of jumpstarting an RV battery with your car, and we will also share a few ways to jump start your RV battery without using your car.

Can I Jump an RV Battery with My Car without Damage?

When your RV battery dies, you may think to jump start it with your car. The alternator in your car can be damaged if you do this. It can create other problems with your car down the line. This is not advisable for a few reasons:

Can I Jump an RV Battery with My Car without Damage

Voltage Drop:

If you try to start your RV using your car battery, you may have a problem with the sudden voltage drop. This can cause damage to your car’s electrical system.

Electric Shorts:

When you try to start your RV using your car battery, there is also a chance that you will create an electric short. A fire can start when this happens, and your car’s wiring can be damaged.

Long Term Damage:

Jumpstarting your RV using your car battery can also cause long-term damage to your car’s electrical system. The alternator is put under a lot of stress, leading to failure in the future.

Alternative Methods To Jumpstart an RV Battery?

You can’t jump start an RV battery with your car, but don’t be disappointed. There are other ways to do it. The following are five methods for jumpstarting an RV battery: a portable power pack, another RV battery, drip charging, a large truck battery, and a vehicle jumper cable.

Jumpstart an RV Battery

Method One: Using a Portable Power Pack

If you have a portable power pack, you can use it to jump start your RV battery. This is the easiest method and doesn’t require any special equipment. Here is the process of using a portable power pack to jump start an RV battery:

Using a Portable Power Pack

Step 01.  Connect the positive (+) lead from the power pack to the positive (+) terminal of the RV battery.

Step 02. Connect the negative (-) lead from the power pack to the negative (-) terminal of the RV battery.

Step 03. Start your engine and let it run for a few minutes.

Step 04. Turn off your engine and disconnect the leads from the power pack.

Method Two: Using Another RV Battery

If you have another RV battery, you can use it to jump start your RV battery. This is a little more complicated than using a portable power pack, but it’s still relatively easy. To jump start an RV battery using another battery, follow these steps:

Using Another RV Battery

Step 01. Remove the negative cable from the RV battery that needs to be jump started

Step 02. Place the negative cable of the other RV battery on the same post as the negative cable you just removed

Step 03. Connect the positive cable of the working RV battery to the positive post of the RV battery that needs to be jump started

Step 04. Start the engine of the RV with the working RV battery

Step 05. Once the engine is started, remove the positive and negative cables from both batteries

Step 06. Reconnect the negative cable to the RV battery that needs to be jump started

Step 07. Put the cover back on your RV battery.

Method Three: Drip Charging

If you don’t have a portable power pack, another RV battery, or jumper cables, you can use a drip charger or large truck batteries to jump start your RV battery. A drip charger is an easy way to charge your RV battery without having to remove the cover. Follow these steps:

Drip Charging

Step 01. Open the hood of your RV and locate the battery.

Step 02. Remove the black cap on top of the battery and set it aside.

Step 03. Screw on the drip charger to the top of the battery posts. Be sure that you are using the correct size drip charger for your battery.

Step 04. Plug in the drip charger to an outlet.

Step 05. The drip charger will start to charge the RV battery slowly.

If your RV has a slide out, you can also plug the drip charger into the 120 volt outlet in the slide out room. This will allow you to keep the RV plugged in while you are using it, and it will help to keep the battery charged.

Once the RV battery is jump started, you will need to disconnect the drip charger. Be sure to unplug it from the outlet before disconnecting it from the battery.

Method Four: Large Truck Battery

Most trucks have a large battery that is perfect for jumpstarting an RV battery. If you have a friend with a truck, you can ask them to help you jump start your RV battery. The process is as follows:

Large Truck Battery

Step 01. Open the hood of your RV and locate the battery.

Step 02. Remove the black cap on top of the battery.

Step 03. Connect the red jumper wires to both batteries’ positive (+) terminals.

Step 04. Connect the black jumper wires to both batteries’ negative (-) terminals.

Step 05. Have your friend start their truck and wait for about five minutes.

Step 06. Disconnect the black jumper cables from both batteries.

Step 07. Disconnect the red jumper cables from both batteries.

Step 08. Close the hood of your RV and start your RV.

If your RV will not start after following these steps, you may have a more serious problem and should take your RV to a mechanic.

Method Five: Using a Vehicle Jumper Cable

A set of jumper cables will help you jump start your RV battery. The most common method of jumpstarting an RV battery is with this method. Most RVer’s have jumper cables, so it’s a good option to have in case of an emergency. Here is the process of using jumper cables to jump start an RV battery:

Using a Vehicle Jumper Cable

Step 01. Connect one end of the jumper wires to the positive (+) terminal of the RV battery that you want to jump.

Step 02. Attach the other end of the jumper wires to the positive (+) terminal of the vehicle supplying power.

Step 03. Connect one end of the jumper cable to the negative (-) terminal of the vehicle that is providing power.

Step 04. You should attach the other end of the jumper cable to a piece of metal on the RV that is not painted. Do not connect it to the negative (-) terminal of the RV battery.

Step 05. Once you have connected all of the cables, start the vehicle’s engine that is providing power. Let the engine run for a few minutes, then start the engine of the RV with the dead battery. Once both engines are running, remove the jumper cables in the reverse order that you put them on.

FAQs:

Q: Can you Charge your RV Battery with Jumper Cables?

Yes, you can charge your RV battery with jumper cables. It is important to connect the cables in the correct order. Otherwise, you could damage your vehicle’s electrical system.

Q: Can I Jump Start my Travel Trailer Battery?

You can jump start your travel trailer battery with a car, but you should be careful. Jump starting an RV battery can be dangerous if done incorrectly, so it’s important to take the necessary precautions.

Q: How do you charge a dead RV battery?

One way to charge a dead or flat RV battery is to use a jumper cable to connect the RV battery to a car. The other way to charge a dead or flat RV battery is to use another battery, and drip charging etc.

Q: Can You Jump Start a Deep Cycle Battery?

It is possible to jump-start a deep cycle battery when the weather is warm. In cold weather, the battery’s cranking amps will be reduced, and it may be difficult to start the engine.

Conclusion:

Jumping your RV Battery is a process that can be done in a variety of ways. It would help if you did not use the car battery to jump the RV battery because it can cause damage to the car battery. If you follow the steps in this article, your RV should start right up.

After trying these steps, if your RV still won’t start, you may have a more serious problem and should consult a mechanic. Maintain your RV battery well, and your RV will take good care of you.