I got my FF x139 in April. We've taken a few trips this summer. One dry, the rest with hookups.
We wil go on a final campout this weekend, dry.
I plugged in the 30 amp cord to a 30 amp plug on the house for about a day. After being unplugged for one day, the battery looked drained already.
A neighbor said to charge it for MORE than a day, and it should be fine.
Is this true? Or should I take it to Batteries Plus and have them test it? When charging for a trip through a 30 amp plug on the house, how long do you usually charge it for a one weekend trip?
I've found that it only takes a couple of hours to charge the battery. Sounds like something else might not be working correctly. First get the battery checked, after that, it could be the convertor.
OTOH, don't worry what happens, just make sure you watch your battery meter, if it drops too low, just plug it into the tow vehicle (running of course) that will charge it also.