how many hours do you need for an aa
Typically, it may take 3 to 4 hours to charge any type of AA battery; however, all these depend on your requirements. Charging Time for Different Types of AA Batteries. Nickel-Metal Hydride (NiMH): Ultra Fast AA/AAA battery chargers take about 4 to 6 hours to simultaneously recharge four batteries. Conventional battery chargers may take up to 8 to 10 hours for charging two batteries.