The TS-121 OptiMate™ Battery Charging System/Alternator Tester is your go-to diagnostic tool for quick vehicle electrical system checks. In just 15 seconds, connect the included clips to your 12V lead-acid or 12.8V LiFePO4 battery and instantly assess battery health, starting power, and charging system performance without any disassembly. Monitor cranking voltage down to 6V and charging voltage up to 15V to identify weak batteries or overcharging issues. The removable, replaceable battery clips work with both direct battery connection and installed SAE leads. Includes mounting hardware and cable straps for convenient storage or installation. Professional-grade troubleshooting made simple.
