With a charging time of three hours, this lithium-ion battery is 7.4 volts, 2300 mAh, and is intended to use with models: VX451G7, VX454D0, VX454G7, VX459D0, VX459G7, EVX539G65, EVX539G75, and EVX5400D025. This battery pack fits models: VX451G7, VX454D0, VX454G7, VX459D0, VX459G7, EVX539G65, EVX539G75, EVX5400D025, 48ZU25, 48ZU26, 48ZU27, 48ZU28, 48ZU29, 48ZU30, 10C615, 45CP58, 45CP59, 45CP60, 45LW47, 45LW48, 45LW49, 45LW50, 45LW51, and 45LW52.