How To Tell If My Car Battery Is Good. Your vehicles engine takes time to crank. Place the black lead on the negative.

MR CARTOOL B300 Car Battery Tester is a battery tester with a 32 inches color screen. For testing purposes we will select 2A or 200mA in the amp section of the meter. So it is necessary to buy a car battery tester to determine whether your battery is still healthy MRCARTOOL B300 is a good choice.
Most have a shipping code on the case.
Ad Need a New Battery. It supports testing of 12V. Your vehicles engine takes time to crank. This is where we can see the parasitic draw on the battery.
