The 3 step TEST! checks battery charge level. Records the lowesr start volts and verifies the charging voltage.it's easy to use! connect the clips to the battery then:
1. Check battery charge level. A low battery cranks (starts engine) poorly.
2. Start engine. Optimate TSET recodrs and indicates (for 20 seconds) the lowest start volts.
3. With the engine running , verify charging voltage from alternator and voltage regulator.