How To Find A Battery Drain In Your Car. If that test really shows zero the discharge has to be internal to or on the battery itself. If your battery continues dying then some other mechanism in the car drains the battery.
How to test battery. The test you describe will detect it if done correctly. It means an electrical component in the car system continues to use electricity even when the car is off.
Next you want to see if theres a drain on your battery somewhere in your system.
Times based off batteries in excellent condition at 100 beginning charge. You should see the multimeter display the number of Amps that are actively causing your battery drain. The reading for a normal vehicle with no parasitic draw can range from 10mA to 50mA depending on the manufacturer and the amount of computers and features the vehicle has. Car not starting or turning over indicates towards multiple possibilities.
