Lithium Ion UPS
I just bought 150kwh worth of lithium ion batteries. 28 Tesla modules, 5.3kwh and 25v each.
Max voltage = 25.2
Min voltage = 18
I also bought a bunch of inverter/chargers that can handle Tesla's particular voltages, as well as have adjustable cut offs so I can limit max SoC to 80 or 90% min SoC to 10 or 20% to improve battery longevity.
I will end up having a bunch of old lead acid UPS, which of course operate on different voltage range. Im wondering if anyone here knows how to go about repurposing these older UPS to work with Lithium Ion voltages. All my lead acid UPS operate with 8, 16 or 20 12v batteries (96v, 192v, 240v).
If the old UPSs cant be repurposed, i guess they will need to be sold or tossed.
Same goes for our diesel generators. Better to add more battery capacity than maintaining a generator indefinitely.