OptiMate 6 Ampmatic and TS-120 Battery and charging system tester bundle
OptiMate 6 Ampmatic, with 5Amps of charge current, is an advanced battery saving charger, tester and maintainer for marine and automotive batteries. – More information on Optimate 6 here
OptiMate TEST records and indicates (for 20 sec) the lowest start volts.
With engine running, verify charging voltage from alternator and voltage regulator. More information on TS-120 Battery tester here