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Old 07-06-2022, 05:40 PM   #21
Montana Master
Join Date: Jun 2020
Location: Qualicum Beach
Posts: 594
M.O.C. #26399
The res fridge is the new kind, my label says max 4 amps.
2018 Keystone Montana 3811MS
2017 Ford F450 diesel dually
600AH Battle Born Lithium Batteries, 1,080 watts solar
3,000 watt hybrid inverter with 120A charger
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Old 07-06-2022, 06:43 PM   #22
Montana Fan
Join Date: Jul 2019
Location: Mesa
Posts: 157
M.O.C. #24588
Your batteries didn't fail, the BMS built into each battery did a low voltage cut out at 10.5 volts. When you connected the generator, the BMS allowed voltage to begin charging the lithium batteries. The purpose of the BMS is to provide protection from over charging, discharging at too high of a rate, prevent charging from taking place when the battery temp is below freezing, to name a few. The BMS also looks at each individual cell of the battery and reacts to the first cell that reaches a full charge, or cools to 32 degrees, reaches the cut out voltage etc.. The Victron shunt keeps a running total of amp hours out and when the same amount comes back in, may sometimes indicate 100% when it really isn't. Top balancing the battery cells can improve battery performance by SLOWLY bring all cell voltages to peak before entering service.
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