How Long Does A Dead Battery Take To Charge. How Long Does It Take To Charge A Completely Dead. However if it was left powered on and near discharged permanent damage may have been done to the battery.
For example a 12 volts battery will take more time than a 24 volts battery. Charging your battery this way often requires a battery to be charged beforehand by an amp charger. 7 Nov 5 2007.
Double these times if the battery is fully discharged.
7 Nov 5 2007. A large car battery at 50 charge capacity takes 4-7 hours to reach full charge. Its not a good idea to completely use all the juice and re charge it again it kinds of calibrate your battety but it may cause problems in future. You might have to charge the battery longer if your amp setting is lower.
