svetz
Works in theory! Practice? That's something else
The battery inside a particular UPS is a 12V & 5 Ah with a constant charge voltage of 13.5-13.8 in standby and cycle of 14.4-15.0. The manufacturer says it's not replaceable. I can find the battery on AliExpress for $30 or someplace I've never heard of (eBuy7 for $22). The old battery died after 20 months of service.
Question: Amazon has something close with a constant charge voltage of 13.6-13.8 in standby and cycle of 14.4-14.9. How important is that .1V?
Question: Amazon has something close with a constant charge voltage of 13.6-13.8 in standby and cycle of 14.4-14.9. How important is that .1V?
- BMS that fits and can handle the current
... the 40 amp 4S Daly is 48x75x9 mm. - Thermal Problems
I'm not shy, I could always ventilate the case or leave the battery external - Why don't I read about people doing this?
3.2 Ah x 5 = 15 Ah... but the inverter draws 390 watts, 390/12V = 32.5 Amps ... I'd have to go to 10p