Set includes four 9V lithium-Ion batteries and one 2-bank charger for them
Battery nominal capacity: 600mA; Nominal voltage: 7.4V
Charger Input: AC 100V-240V, 50-60Hz; Ooutput: DC 9V; Charging current: 300mA
Great for all sorts of high-drain devices. Higher capacity than heavy-duty or alkaline batteries
NOTE: These batteries MUST be only used in this charger ONLY, any others could cause damage.