Hyundai Dry Cell 12 volt 42 Amp Hours Class Type A battery



As you can see how much voltage left - just 2 volts ++ around 10.7 volts the battery is already useless. So much wasted 10.7 volts is still a lot of voltage can could power pone charger. I was thinking of making step up voltage circuit for DC to DC to get back 12 volt from the dead battery at long as the voltage still around 10 to 8 volts.



Brand new GP battery is 12.54 volts cost RM230

Battery Air Lead Acid Perodua Alza, Bezza, MyVi, Kancil
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