How To Test A Aa Battery With A Digital Multimeter. You can also use a multimeter or voltmeter to test your car battery. Fully discharged battery short circuit current is about zero.
Fully discharged battery short circuit current is about zero. Touch the red probe to the amp jack. The reading on the screen goes up.
Then set the multimeter to the 20 A current scale.
Sometimes a battery will be useless for certain high-power devices eg. It may be indicated with DCV. And red lead of the multimeter to the positive terminal of the battery. Childrens toys but are still perfectly suitable for low-power devices such as TV remote controls.
