Profoto Li-Ion battery for Pro-B4https://photocineshop.com/en/products/profoto-li-ion-battery-for-pro-b4-829NQW?cat=406
Li-Ion (LiFe) battery for the Pro-B4 generator. Unbeaten performance thanks to the latest Li-Ion technology . UN-certification makes it easy to travel with.
High capacity (>200 flashes @ 1000Ws)
Low weight (Less than 2 kgs)
Fast recharge (less than 45 minutes with quick charger)
Long battery lifetime (+1500 recharge cycles)
Wide operating temperature range (-20° to +50° C)