48V 40AH lifepo4 battery for Power Supply System Lifepo4 battery pack 20ah,30ah,40ah,100ah,200ah 24v 48v 48V 40AH lifepo4 UPS battery packs for Communications Power Supply System RFE-15F40(48V40Ah)Nominal voltage48V Nominal capacity40Ah Minimum charge voltage54V 48V 40AH lifepo4 UPS battery packs for Communications Power Supply System