Simultaneously Charges Four Batteries, 4 NP-F Series Li-Ion Batteries (4400mAh), PD 65W Maximum Power Input, USB-A Outputs for Charging Devices, LED Charging Indicators, LCD Status Screen, 1.6A Charging Capability per Battery Bay. This Watson 4-Bay NP-F Battery Charger with 4 x NP ...Simultaneously Charges Four Batteries, 4 NP-F Series Li-Ion Batteries (4400mAh), PD 65W Maximum Power Input, USB-A Outputs for Charging Devices, LED Charging Indicators, LCD Status Screen, 1.6A Charging Capability per Battery Bay. This Watson 4-Bay NP-F Battery Charger with 4 x NP-F770 Lithium-Ion Battery Pack Kit from B&H combines the versatile 4-bay charger with four NP-F770 batteries to assure you'll never be without power on a shoot.