WFCO 55 amp converter operation

samandtheduck wrote:
I have had issues with bad connections and bad batteries in my motorhome and have them all resolved except knowing how this converter should work. It charges a new set of batteries to about 13.6V with no load. When I put a load (2 fantastic fans and a 12V TV) on the batteries the voltage slowly drops to about 12.65V and seems to stay there. If I shut the converter off it drops even further so it is doing something. When the load is shut off it takes about 20 mins for the voltage to get to 13.4V. I think over a longer period it will get to 13.6V. I have a friend who has a progressive dynamics converter and he says when he puts a load on the batteries the voltage drops from 13.3V to 13.2V and never goes lower. Do I have a bad converter or does this type just act like a trickle charger?

Sounds like a bad converter or connection issue. I have the WFCO 55 in my camper and when I switch it on it immediately jumps to 13.6V. I can put all manner of minor 12V loads on it and it won't budge from 13.6V. Minor loads meaning whatever OEM 12V equipment in the camper you want - water pump, lights (all LED in my case), exhaust fans, furnace, etc. I acknowledge that my batteries are usually at a decent SOC so I'm not talking about what happens when my batteries are quite low when turning the converter on.