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Tecmate Optimate Test – Cranking & Alternator, TS-121, 12V Tester for Battery State of Charge, cranking Performance and Vehicle Charging System

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Product details

Management number 211789666 Release Date 2026/04/04 List Price US$14.62 Model Number 211789666
Category

The ultimate pocket tester for on-vehicle battery performance & alternator voltage testing that every service technician or gear head should have! Easy to use! Connect clips to the battery or connect to an installed SAE battery lead, 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. 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! A premium tester designed by TecMate. 3-year limited replacement .

  • The ultimate pocket tester for on-vehicle battery performance & alternator voltage testing with either 12V lead-acid or 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 to battery, check state of charge, start engine tester displays cranking voltage and vehicle charge voltage simultaneously- 15 sec is all you need!
  • Display cranking volts down to 6V and charge voltage range up to 15V - Check weak battery or overcharging!
  • Easy to use! Connect with the included clips to the battery or connect to an installed SAE battery lead. ; Verifies charging voltage when engine is running.
Color red
Model TS-121
Brand Name Tecmate
Style Name OptiMATE TESTER: 12V Cranking & Alternator test
Item Weight 0.3 Pounds
Manufacturer TecMate
Power Source Battery Powered
Item Type Name OptiMATE TEST – Cranking & Alternator, TS-121, 12V tester for battery state of charge, cranking performance and vehicle charging system
Item Dimensions 10.5 x 4.75 x 1.25 inches
Measurement Type Voltmeter
Specification Met Sae
Included Components Battery Tester
Warranty Description 2 Years
Minimum Operating Voltage 6 Volts (DC)
Global Trade Identification Number 05425006141864

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