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Wisconsin | there are a couple sizes of "marine cranking" batteries that will fit, get the biggest one. I've had no problems with the ones from menards, but I'm sure a Deka or Trojan would be better if you're going to be cycling the battery every day.
I think a lithium is a little more complicated, you can't just hook a lithium battery to a lead acid system, it would need to have a built in charge controller, maybe they come that way for a motorhome? if you're going lightweight, or every pound matters, or you just want more power, the lithium is the way to go. if you just want to have a few lights and still start the motorhome in the morning, then a lead acid battery will be plenty. Get LED bulbs, unless you're a HAM, or wear tin foil hats.
If you have a used 31T, that will work fine to if you just want to see how it works for you.
Edited by junk fun 4/17/2022 14:51
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deep cycle battery
