How to Charge RV Battery While Driving?

RV Tips How To Charge Your Battery On The Go

How to charge rv battery while driving is the most demanding question. “RV batteries get charged automatically when you drive!! ” Yes! this is folk in the air across the globe about these batteries.


if you have a connector that is probably 7 way and is connected to the vehicle battery, the folk is true but up to a certain extent, and charging RV batteries repeatedly is not a matter of consideration.

But still, What if the battery drains out on the road trip? What if you need to charge the battery while driving? In case being an owner of the RV battery, you should learn How to charge the RV battery while driving.

There are multiple methods available online to charge RV batteries while driving, but in the stated article we will discuss a method to charge an RV battery while driving that is tried and tested.

We assure you that the techniques mentioned in this article work swiftly and expeditiously.


How to Charge RV Battery While Driving


Material Required:

Although RV batteries are long-lasting and durable, it still needs to get charged. But how often should you recharge your battery is dependent upon the charger size, its capacity, and current battery status.

If the battery charger is of good quality with perfect insulation the energy will be transferred to the adopter efficiently. Moreover, we advise you not to get your battery status get less than 50%. The lesser the battery status, the more time it will take to charge.

• To charge a battery while driving, you need the following items:
• High Ampere, superior quality cables
• Relay to Control Voltage


Take Voltage Controlled Relay and connect it to the starter battery. This voltage Relay acts as an automated switch with controls the auto ON /OFF. It acts as a bridge between the starter and auxiliary battery when connected using a 7-way connector. It makes the battery durable as it saves energy when the vehicle is off.


The second step is to connect the High Ampere cables. Undoubtedly you need high-quality cables and plugs, it is because such high-quality plugs avoid voltage wastage when transferring energy.

*Don’t worry if the things get heat up.*

Most batteries have built-in anti-hazard systems that control the overall procedure. Additionally, if you use High Ampere cables and plugs the whole process will become energy efficient.

And, if you want to make your battery last longer, you have to take certain measures. Initially, check the charging of the battery from time to time, don’t make it fall below 50 to 80 %. This will stabilize the charging capacity and speed of the battery.

Moreover, always use distilled water when checking the level of electrolytes. Additionally, use generators or converters to charge your batteries, it will make them more durable.

Using Generator and Converter for Charging:

Generators are designed to transform fuels into 120-240 V of energy depending upon one’s capacity. The Alternative current generated by the generator is converted into Direct Current when required by the converter.

The converter is specified to convert 120V of energy into 12 Volt. This is the exact voltage that every RV battery utilizes to produce current. So, it is very important to get a high-quality converter, because it is the main part of the process which produces the DC to be used for operations and will save you from problems in the future.

If you opt to charge your RV using the generator, it will surely increase its life expectancy, but at the same time, the procedure will be slow. Before initiating the process make sure that everything is turned off.

Plus using 3 stage charger makes the process feasible and speedy. Most RV batteries have built-in three-stage chargers but if you don’t get along the battery, it is recommended to buy one separately. It will make the charging process easy and efficient.

Stages of Charging


1.Bulk Stage:

This stage is also known as the Boost Stage and is initiated when the battery is nearly completely out of charge. This is the quickest phase of battery charge because the battery is boosted to use amperes emitted from the charger at the fastest pace.

2.Float Stage:

This is the stage when the battery is almost 90-95% charged. In this phase, the current continue to pass by the battery but only a fragment of that current is utilized by the battery and the voltage remains at 13.4 consistently.

Pro Tips to Charge RV Battery While Driving

Here are few pro tips to increase your battery longevity:

  1. Reduce DOD to minimal. DOD means Depth of Discharge, it shows the relationship of overall battery capacity and the amount of the battery being discharged. ( Check Wiki for more details)
  2. Perform consistent checks. It will help you to identify when charging is required and you can easily maintain the minimum threshold of the battery capacity.
  3. Always make sure that the battery is off when the truck is not in use. It is important to avoid the unnecessary drainage of the energy that will reduce the battery life.
  4. Avoid the over-charging of the battery.
  5. Make sure not to be hard on the battery during summer days, because it will cause the battery to heat up.
  6. Use distilled water to maintain the level of electrolytes in the battery.
  7. Avoid sulfation, which occurs when the battery goes under the prescribed charging level (check the manufacturer label for details).
  8. Don’t let your battery voltage fall below 10.5 volts.
  9. Evaluate the battery status using the digital voltmeter.
  10. Regularly monitor the voltage status when your battery is on charge.


Thus, to recapitulate, charging the RV battery on the go is possible, but how to charge an RV battery while driving, needs you to understand the depth of procedure and tools required to get the job done efficiently.

Moreover, the choice of the high-quality converter and High ampere cables along the three-phase charger will make the charging more accurate as compared to the use of a seven-way converter.

Hopefully, the above-stated article would have said all you need to know about “How to charge RV battery while driving”.

Add a Comment

Your email address will not be published. Required fields are marked *