This is Duracells fastest ever charger and is capable of charging up to 2AA or 2AAA batteries in 15 minutes. The unit is supplied with 4 AA size 1300m Ah rechargeable batteries. An LED status indicator shows the state of charge. Approx 75% of full charge, when using Duracell 1300 mAh AA or 750 mAh AAA Ni MH Batteries. The charge rate and time is dependant on cell capacity, discharge state and operating temperature. Area device may be used UK, 230V AC and UK plug.