Duracell Hi-Speed Charger is your simple, safe and reliable solution to never missing out on anything that happens in your life. Charges both AA and AAA batteries. Comes with a partial charge indication and after batteries are completely charged, the charger can automatically shut off to prevent overheating. Its 9 safety features make sure that you have the power you need without the worry. The charger comes with Duracell’s 5-year guarantee so you can rely on Duracell’s best, long-lasting power every day. Start a new adventure in life with full power, high performance and good value for money – the perfect balance. Ready in 4 hours - Approx. 90 percent of full charge, when using Duracell 1300 mAh AA NiMH batteries. Approx. 80 percent of full charge when using Duracell 750 mAh AAA NiMH batteries. Packaged with 2x AA and 2x AAA Rechargeable Batteries.