DIY Lithium (LiFePO4) Battery Replacement for 12V Lead Acid Battery - UPS
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- เผยแพร่เมื่อ 16 ก.พ. 2022
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DIY Lithium (LiFePO4) Battery Replacement for 12V Lead Acid Battery - UPS
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What component parts didyou change on the board to max its charge voltage to 14.4 for lifepo4 because lead has only 13.6v charging voltage
Nice option. I tried this long back. It gives good backup
Thanks buddy...I want the exactly same for my PC
Lipo4 besides transformer? Nice
What's the Max C discharge rate of the Lead Acid battery vs the LiFePo4 though? I thought the major risk here was over drawing the battery's output capacity.
3C cells are easily available, with 5C surge. 10C 8Ah headway cells also can't be easily obtained in the US.
BMS is rated for 20 amps 3C for the batteries would be 18A, it is appropriate to use it and thermal protection will save from over temp and he is supposedly using at 1/2C because he says that's he's getting 2 hrs backup
Hi buddy, how do you resolve the issue when the lfp4 get drained too low after an outage?
A good BMS should cutoff the load if the cells (any of the cells) drops too low.
El tiempo de respaldo lo tiene la UPS programado a 5min.
Como cambiamos eso?
Can it operate 24hr/day for 1 yr? I'm going to use it with my CCTV DVR.
Same here bro
Yes . Absolutely work perfect
Can this be charged without an external charger?
Yes, the UPSs internal charger can efficiently charge the LIFEPO4 cells as they can used as an direct Lead acid replacement.
@@tanishqbhaiji103 hey, I measured my APC UPS float voltage 13.75V so it's 3.44V per cell is that safe for long-term? and it's a bit warm inside the UPS around 35-40C because of the charging transformer, maybe I will add a little exhaust fan.
Those are really large diameter battery cells