@LazyFisher yeah same issue hit me last winter in my tiny house build. Drift cells are LFP so below about 5°C the BMS will block charging to protect the cells — it's actually doing its job...
Had this exact issue with mine last winter. Nine times out of ten it's the battery cables — even slightly undersized ones create enough voltage drop under surge loads to trigger the low voltage...
Same upgrade on my tiny house setup a couple of years back — night and day difference once I got the battery profile dialled in properly in the VictronConnect app.
Spot on choice to lurk first — you'll have clocked all the mistakes without making them yourself. Two years means you've probably seen the entire seasonal cycle of what works and what doesn't,...
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