George it sounds like AGM is what you want, no maintenance. Here is a good price offering available on Amazon:
https://www.amazon.com/Vmaxtanks-Vma...le+battery+12v
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SOB
2015 Volvo VNL780 D13, iShift, 32k ET air hitch, Idle Free LiFePO4 APU
16.8KWhr LiFePO4, 2.52 kw solar, 10kva Victron split phase
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