How To Not Drain Car Battery. This is done by disconnecting the negative battery terminal from the negative post on the battery and using the positive and negative probes on the amp meter to complete the circuit between. A simple test to help you find why your car battery is always dead in the morning.
With a car battery it is best to power things with an inverter while the battery is hooked up in the car and when you think the battery has been depleted by about 20 start your car and let it run for at least 30. Unsecured cables dirt or corroded connections worn-out tensioners or loose belt. Make sure to set your multimeter to DC.
If the battery test shows that it is still good then its time to start looking at a parasitic power draw.
Ad Get Your Motorcraft Tested Tough Plus Batteries For 10495. In reality some car batteries perform much better than others. The devices that drain car batteries are radio systems headlamps air conditioning systems and alarm systems. This is known as a parasitic drain.
