I've seen posts where people put in 20 or more amp dc to dc chargers in their trailer to charge the trailer battery while towing. But a 20 amp charger draws twice that on the input side as I understand it (so 40 amps), and the fuse and wires on the bargman cable have a max of 30 amps, so for a 20 amp charger you have to install new thicker wires and bigger fuse.

But I don't want to install new wires. So my question is, has anyone installed a small 10 amp dc to dc charger in their trailer, on the existing wires in the vehicle and the bargman cable, using the existing 30 amp fuse, anrd does that work?

If I could get close to 10 amps charging, that's all I need. Right now with the stock setup, I get only about 2 amps charging, and thats only when the trailer battery is discharged quite a bit.

As this is not generation specific moving to General Discussion.

Victron makes an 18a DCDC charger (model 12/12-18) and Redarc makes a 12a DCDC charger specifically for trailers model BCDC12T).

Hello

good info! I'm looking to add pass through power to my camper, and this is exactly what I needed!