Great thread, everyone's covered the main culprits well. One thing I'd add that often gets overlooked — check your battery cable sizing and connections before diving too deep into software...
Really interesting thread this. I've got two of those blue-cased units running my shed setup and did a proper discharge test last autumn using a DC electronic load.
Great thread, this. @HighlandExplorer, one thing I'd add that hasn't been mentioned yet — check whether your battery temperature sensor is actually making solid contact with the cell surface.
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