Start engine. OptiMate TEST records and indicates (for 20 sec) the lowest start volts.
With engine running, verify charging voltage from alternator and voltage regulator.
TIP: Low charge voltage causes poor battery performance. Too high charge voltage causes excessive gassing and will eventually damage a lead-acid battery. Too high charge voltage is FATAL for a LiFePO4 starter battery!
Easy to follow instructions on rear panel of the tester.
Industry standard SAE 2-pin connector.
40" / 100cm battery clip set.
A premium tester designed by TecMate. 3-year limited replacement warranty.