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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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4.2 ★★★★★
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CLop
Whiting, US
★★★★★ 5
I'll stick to Rain Design
Color: Space Gray, Size: mStand, Style: mStand
There are a lot of laptop stands out there and call me a loyalist since I bought my first Rain mStand over 10 years ago but I came back to Rain for my second one after giving the original one to my kid for college. I purchased the Space Gray version to match my current Macbook Pro color. It's still a handsome, well-crafted non-nonsense design. It's great that Rain didn't change the design much from the original one I had. It works well with padding in just the right places, and it's timeless design is a complement to any room decor. Go with Rain.
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Reviewed in the United States on October 29, 2024
K
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Kyle M
Port Orchard, US
★★★★★ 5
Luxury Organization
Color: Pebble Black, Size: 9.5in x 7.9in
Keep your keys, wallet, and all other every day carry items in one, high quality location. Very nice material and build quality that accessorizes my dresser perfectly. The size is appropriate for everything that belongs in your pockets. Overall the best value for your $ I’ve seen, especially if you can catch a discount.
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Reviewed in the United States on March 30, 2026
D
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Daniel Fuller
San Leandro, US
★★★★★ 5
Good quality, good looking
Color: Sand Brown, Size: 9.5in x 7.9in
High quality build and nice-looking. Perfect for my guest room, where people leave wallets and keys and chapstick and sunglasses and whatnot. Love it
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Reviewed in the United States on February 13, 2026
A
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amiller
San Leandro, US
★★★★★ 5
Very nice! Great gift!
Color: Pebble Black, Size: 9.5in x 7.9in
The photos don’t do this item justice. This is very high-quality construction and great look. My son loved it. I will order more for gifts.
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Reviewed in the United States on April 17, 2026
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RV
Carnegie, US
★★★★★ 5
Quality organizers for small daily items
Color: Sand Brown, Size: 9.5in x 7.9in
Perfect and high quality tray to organize your small items. Love the color as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026

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