Car Battery Voltage Too Low To Charge. I even left for a week on vacation and came back to my car starting just fine remotely. 3 Using jumper cables connect the positive terminal of a healthy battery to the positive terminal of the dead battery.
If it does not see a battery then it will not put out any energy. 1 Disconnect the battery. Explains how to be safe about it why it happene.
Consider your car battery charged at 124 volts or higher and discharged at 1239 volts or less.
You can connect a charger whilst the battery is in the car. A battery charger will try to sense if a battery is attached for safety reasons. When your car is running the cars alternator is charging the battery this is why you should see a higher voltage. When a car drops for instance from 126 to 120 there will be 75 difference.
