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Duuuuuuuude
You RV guys sure do know how to punish batteries… none of my friends who own these things can make it though a season or two without needing replacements.
I added a programmable low voltage disconnect in mine to help keep my head above water.
Either way, many of my storage items are being converted to lithium, portable power, including my 4Runner dual battery setup.
Here is just a little taste of my current inventory for various projects... mmm batteries