OptiMate TS-121 Vehicle Battery and Alternator Tester for 12V Lead-Acid and 12.8V LiFePO4 Starter Batteries

The OptiMate TS-121 pocket tester checks starter battery voltage, starting performance and vehicle charging voltage without removing the battery. Connect its clips to the battery or use a compatible installed SAE battery lead, then follow the ignition-off, start and running checks.

Key Features

• Check battery charge voltage with the ignition off, then monitor starting and running voltage as the engine is started.
• Automatic operation records and indicates the lowest starting voltage for 20 seconds.
• Read cranking voltage down to 6V and vehicle charge voltage up to 15V.
• Multiple LEDs provide voltage and state-of-charge indications.
• Removable, replaceable battery clips connect through a 2-pin SAE connector.
• A removable backplate and supplied mounting accessories support installation in a suitable enclosure.

Specifications

• Manufacturer model: TS-121; merchant part number: 3807-0245.
• For vehicles with 12V AGM, gel or standard lead-acid starter batteries, or 12.8V LFP/LiFePO4 starter batteries.
• Input connection: 2-pin SAE with battery clips. Testing uses a connection to the vehicle battery.
• Fully enclosed electronic circuitry with multiple LED indicators.
• Package includes the tester with battery clips, two cable straps, adhesive hook-and-loop straps and screws for mounting the removable backplate.
• Follow the supplied instructions and the vehicle manufacturer's procedures when performing battery and running-engine checks.