Lifepo4 Battery 48VDC 100ah. +- 2 years old, formerly used as ups battery in a heated rack on a very stable mains supply. These packs had an absolute maximum of 200 cycles per year. Controllable through rj45 canbus. Guaranteed working battery pack no cell damage or other alarms. Message me for shipping questions these units are very heavy so international shipping will probably be very pricey. If buyer is in NL then we could talk about pickup or delivery.