Battery Charging Issue
Was about to load up the camper but batteries were down to 3.5 volts. Ac was on and it’s been stored since we got home in my shop. I had power as recently as last week but don’t know how long the batt...
Forum Discussion
bigfootford wrote:
Well there are some good maintainers and some bad...
The bad ones actually will put a drain on the battery...Sad but true.
One is the inexpensive Harbor Freight maintainer. Just disconnect the shore power from the maintainer and notice the led is still lit..
Jim
Been using HF maintainers for over 20 years. As you noted, they do need supervising and they do die occasionally, that is why for 6 months I do only battery clamps pull.
But in those years only once the maintainer went high-wire and boiled my battery at 16v.
So once again, the only foolproof mode is disconnecting battery clamp.
Coming to OP issue - it takes a lot to blow 30 amp fuse and I don't like when thighs stop acting with no explanation. Did you use jacks in that period?
