How To Charge a Trailer Battery For Refrigerator While Driving Down the Road

Published 04/05/2020

Question:

I need to charge my trailer battery which is hooked up the an inverter while driving down the road.

asked by: James M

Expert Reply:

In order to charge a trailer battery while driving you really only have one option which is to use the vehicle's alternator. In order to do this you need a device sophisticated enough to take the correct amount of charge without causing issues to the vehicle's battery while also ensuing your are not overcharging the trailer's battery. Furthermore, you will need to isolate the two batteries so there aren't any issues with shorts.

For this, we have the Redarc In-Vehicle BCDC Battery Charger part # 331-BCDC1225D which is going to be just what you need so you can power your refrigerator via the inverter while driving down the road. The device as mentioned above is going to take current from the vehicle's alternator and distribute that between the tow vehicle's battery and the trailer's battery for optimal performance.

expert reply by: Conner L