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SKU: 31202258059

OptiMate TS-121 Battery Tester

$40.49 $44.99
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  • USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

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Description

OptiMate TS-121 Battery TesterOptimate TS 121 OptiMate 12V Battery Tester TS 121 This pocket sized premium tester designed by TecMate is solid, reliable and easy to use. Simply connect the clips to your 12V LiFePO4 battery or connect to an installed SAE battery lead, then: Check battery charge level. A low battery cranks (starts engine) poorly. Start engine. The OptiMate TEST unit records and indicates (for 20 sec) the lowest start volts. With engine running, verify charging

Optimate TS-121

OptiMate 12V Battery Tester TS-121

This pocket-sized premium tester designed by TecMate is solid, reliable and easy to use. Simply connect the clips to your 12V LiFePO4 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. The OptiMate TEST unit 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!

Other Details

  • Microprocessor accuracy; Fully sealed.
  • Industry standard SAE 2-pin connector.
  • Easy to follow instructions on rear panel of the tester.
  • Includes Testing unit itself and the wire clamps to connect to your battery.
  • Attaches to any SAE battery cable that you might have on your bike or car.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 31202258059

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Lisa R.
West Palm Beach, US
★★★★★ 5
Fast!
Process was easy. Quickly issued a gift card for my refund.
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Reviewed in the United States on May 14, 2026
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virginia nerlinger
Carnegie, US
★★★★★ 5
efficient and professional
very reputable
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Reviewed in the United States on May 30, 2026
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Helen
Louisville, US
★★★★★ 5
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Excellent and easy transaction
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Reviewed in the United States on May 16, 2026
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Christin
Cuba, US
★★★★★ 5
Always there
Very simple claim process. Reliable coverage that's worth the cost.
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Reviewed in the United States on January 31, 2026
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Jan
Charlottesville, US
★★★★★ 5
Definitely Worth It
Quick and easy process. Coffee maker died and I had the insurance. Refunded and only ended up paying the price of insurance. Would do it again!
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Reviewed in the United States on January 24, 2026

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