Includes troubleshooting tips and advice for all levels of auto repair experience. To check parasitic draw you need an amper meter clamp. Shutting its power is not the same thing. Most vehicles draw some battery current when the key is off, thanks to the clock and the internal memory of engine computers, body-control modules and.
Is your battery having trouble starting your engine?
There may be something draining the battery down.
Had dead battery issues tested to see if there was an ignition off draw that was excessive, I measured mA draw and the limit is mA.
How 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 parke and someti . A parasitic draw can cause the same result as leaving the headlights on-a dead battery. Many techs call key-off current the parasitic drain. Finding electrical problems that drain the battery is getting harder all the time. Attach the test switch between the negative battery cable and the battery and then road- test the vehicle.
Next connect an amp meter to the switch to . Say you leave your vehicle sit for long periods of time and the battery goes dead. Safety Precautions Before Testing. It is best to remove any jewelry and to wear insulated gloves and protective glasses to avoid shock or exposure to the battery. Buy Thexton 4Battery Parasitic Drain Test Adapter: Battery Testers - Amazon.
FREE DELIVERY possible on eligible purchases. Why Is Your Car Battery Going Dead! In this example the battery was disconnecte this will reset the time and date on the dashboard!
You could also measure the current draw without disconnecti. A component or components are drawing current from the battery when they should not be. This test will show you how to quickly pinpoint the source of the draw using voltage drop across fuses.
This is often the result of something being left on but may be more sinister. When you turn the ignition off, switch the lights off and remove the key from the .
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