Duracell Hi-Speed Charger has batteries ready to use in 4 hours (Approx. 90% of full charge, when using Duracell 1300 mAh AA NiMH batteries. Approx. 80% of full charge when using Duracell 750 mAh AAA NiMH batteries.). Duracell Hi-Speed Charger is your simple, safe and reliable solution. Comes with a partial charge indication, 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. Charger comes with a Duracell 5-year guarantee. High performance and good value for money. Supplied with 2x AA and 2x AAA Duracell rechargeable batteries.