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1. Car battery with 2 terminals — (+) positive & (-) negative.
2. To check “Battery” or “Alternator” are the same procedure. Just connect the “Black clip” on (-) negative and touch the “Red probe” on (+) positive.
3. There is a “Magnetic board” on the back side of the Checker. It could help you to fix the Checker on suitable metal sheet of car easily.
4. Before checking please, clean your car battery terminals & adjust relative belts. Which will help you to find the real situation of “Battery” & “Alternator”.
If the battery has just been used. Turn on the major lights for 2 minutes. Then to turn off & waiting for 1 minute before checking the battery. In order to get a correct reading.
If the battery is in good condition that the 1#, 2#, & 3# LED lights will be lighting. Otherwise you need to maintain your car battery.
Note: If your car battery is late style or larger capacity. Maybe the 4# (alternator area) LED light will be lighting (Not only the 1#, 2#, & 3# LED lights). It is no problem.
(Keep engine running)
Normally make the engine turn at 2000 R.P.M. But some vehicles need high idle for checking duration.
If the alternator is in good condition. 6 LED lights will be lighting. Otherwise the facilities & system that mentione d above need to maintain.