OptiMate test TS121 Battery and charging system / alternator tester
The 3 Step TEST! Checks battery charge level. Records lowest start volts. Verifies charging voltage. Checks if alternator is compatible with LiFePO4 / LFP Lithium batteries
Microprocessor accuracy. Easy to follow instructions on rear panel of the tester. Easy to use! Connect clips to the battery, then:
1) Check battery charge level. A low battery cranks (starts engine) poorly.
2) Start engine. OptiMate TEST records and indicates (for 20 sec) the lowest start volts.
3) With engine running, verify charging voltage from alternator and voltage regulator.
35-7983 Optimate Test