15 hours
A charger that can charge a standard capacity AAA NiCD battery (180 mAh) in just one hour might take 8 hours to charge a high capacity NiMH (1500 mAh) battery. It's best to ignore such terms and make a rough calculation of how fast a charger can charge batteries. It usually depends on what the battery is used for. If you are using a 7.2V 3000 mAH NiMH battery for an rc car, it should take 6-8 hours depending on what charger you have. There is a standard wall type charger that comes with the battery, but your best bet is to get a smart charger which charges it in 2-4 hours MAX!! Use a microprocessor-controlled battery charger to charge the NiMH battery at 100 percent of its capacity for 1.5 hours. This type of charger contains a temperature monitor so that venting or overheating does not occur. Battery type: 5000 mAh NiMH size D rechargeable battery, require: 14.5 hours of recharging with 450 mA current output charger, fraction: 14 1/2 hour(s) of recharging with 450 mA current output charger. Yesterday I was finding out how long does it take to recharge a aa battery. Steps. 1. Use a wall mount charger or laptop adapter to charge the battery overnight. Charge at C/10 (ten percent of the battery's rated capacity per hour.) For example, if you have a 100 mAH battery, you would charge it at 10mA for 15 hours. Overnight Charging. The cheapest way to charge a nickel metal hydride battery is to charge at C/10 or below (10% of the rated capacity per hour). So a 100 mAH battery would be charged at 10 mA for 15 hours. This method does not require an end-of-charge sensor and ensures a full charge.
http://www.greenbatteries.com/nimh-battery-charger-faq/ http://www.answers.com/Q/How_long_to_charge_a_7.2V_3000mAh_NiMH_battery http://www.wikihow.com/Charge-NiMH-Batteries http://convert-to.com/491/recharging-rechargeable-nimh-nicd-batteries.html http://www.wikihow.com/Charge-NiMH-Batteries http://www.powerstream.com/NiMH.htm
how long does it take to charge a nimh rc battery