“You will never get a 100% charge without a DC-DC charger.”
Agreed sorta (if not considering solar), but with LFP’s, with the exception of occasional cell re-balancing, there’s not much point in gaining a full 100% SOC - even the high 13’s is enough to at least get you into the low 90% range, and this is what I do (made practicable due to LFP’s deep Depth of available discharge, or ‘DOD’), which seems a fair enough trade-off to extend longevity…At least that’s my own routine…I don’t bother to charge from the vehicle due to having 660w of rooftop solar…Again (unlike Lead batts) there’s no need to routinely achieve a full 100% SOC, in my view it’s better if you don’t..
3 tons