Forum Discussion

aviator41's avatar
aviator41
Explorer
Feb 18, 2018

new batteries leaking during off-season storage

I pull the two batteries from the 5th wheel once it's put up for the winter. they sit in the garage on a board and are hooked to a maintainer that stays plugged in at all times.

one of the deep cycle batteries has started leaking - but I cant tell from where. the board it is sitting on is slowly getting wetter and wetter. Both of the battiers stay hooked up to each other in parallell, just like int the RV and a maintainer is hooked to them to keep them in good shape over the winter. once this leaking started, I removed the maintainer thinking that they might be getting over-charged. The maintainer is a "smart" system that stops charging when the batteries are full. This same setup worked perfectly last year with no leaking and no trouble.

What do I need to be looking for? do I potentiall have a bad battery? I plan on having them tested, but haven't done so yet. Is leaving them conntected to each other a bad idea for storage?
  • I would replace both. I want max battery capacity for the space I have and no battery problems.

    If the OP stays plugged in mostly, the other battery is fairly new and in good condition, and the new battery is a match to the old one, it seems like a reasonable choice. But still and increased chance of battery problems.
  • the batteries are only a year old. they were delivered with the RV. Really, the batteries aren't used that much. Mainly just to run the leveling system during setup and tear down.

    The batteries are about as cheap as the come. Just enough to qualify as a "battery" I suppose. I would imagine that most RV companies do something similar to maximize their profits. I would imagine a battery replacement sometime mid summer to 6 volt batteries.