Comment on Switching out UPS batteries
ChaoticNeutralCzech@feddit.org 2 months agoYou need a balancing BMS anyway and the UPS will not be able to charge it to what it thinks is 100% (about 15 V at trickle current) unless you trick it with a resistor (which wastes power of course).
MangoPenguin@lemmy.blahaj.zone 2 months ago
Yeah you need a UPS that’s OK with the BMS charge FETs opening when the battery is full.
ChaoticNeutralCzech@feddit.org 2 months ago
That’s the problem. There will be no trickle current and the UPS will beep because it will detect battery removal.
MangoPenguin@lemmy.blahaj.zone 2 months ago
Some are ok with it, on a thread I saw on reddit awhile ago about LiFePo4, people had reported a few models that worked fine with the upgrade.