The ultimate pocket battery charging tester for on-vehicle battery performance & alternator voltage output testing. Suitable for use with both 12V lead-acid and 12.8V LiFePO4 starter battery – Easy troubleshooting from cranking to charging! For vehicles fitted with 12V AGM, GEL and STD lead-acid or 12.8V LFP / LiFePO4 starter battery. As easy as 1-2-3, connect the battery charging tester to your battery, check state of charge, start engine tester displays cranking voltage and vehicle charge voltage simultaneously – 15 seconds is all you need! Display cranking volts down to 6V and charge voltage range up to 15V – Check weak battery or overcharging with this Battery charging tester! Easy to use! Connect with the included clips to the battery or connect to an installed SAE battery lead. Easy to use! Connect clips to the battery or connect to an installed SAE battery lead. Connect clips to the battery or connect to an installed SAE battery lead. Check battery charge level. A low battery cranks (starts engine) poorly. Start engine. OptiMate Battery charging tester 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! LENGTH: 40″/100cm CHARGE CONNECTOR (INPUT): 2-pin SAE (+set battery clips) OPERATION: fully automatic State of charge result in GREEN / RED LED results, indication of lowest start Volts when engine starts (20 sec) and running voltage from alternator & voltage regulator. CABLE RATING: SPT-2W 16 AWG (1.32mm2) FUSE: No fuse USE: -40°C/-40°F very low temperature, remains flexible at ‘below freezing’ temperatures STYLE: Fully enclosed electronic circuitry with multiple LEDs, SAE charge connector WARRANTY: 3-year limited replacement warranty
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