@WattAndrea one thing worth trying that hasn't been mentioned yet — give each cell a slow, gentle top-balance charge individually using a bench power supply or even a decent iCharger set to 3.65V...
TrevorLamb | ⚡ 312 posts | Shropshire Union Canal
Worth checking whether it was an over-discharge trip or a temperature cutoff @BoxerCamper — LiFePO4 cells hate the cold and if you were out early...
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