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CVO 1/26/2013How to Stop Car Battery Drains: DIY Auto
There are plenty of energy-robbing devices on your car that are supposed to go to sleep when it's parked, and sometimes, not all of them go to sleep. Here's how to give them a tranquilizer.
http://www.popularmechanics.com/.../...ar-battery-drains
A 3/4 charge battery is 12.50 volts
A discharge battery is 11.75 volts.
A battery under a cranking load and it is reading less than 7 volts,it will be a recycled battery.