Lion Energy UT 3500 BT-H

Marsoni

M251S

$749.50

Get it in 3 business days with 1 day shipping. Friday, May 29

Lion Energy UT 3500 BT-HLion Energy UT 3500 BT H The new UT 3500 BT H delivers nearly 3X the power of a standard UT 1300 BT H, with 280Ah of long lasting LiFePO4 lithium cells built to last a lifetime. It offers 24% lower cost per amp hour compared to three UT 1300 BT H batteries, features a built in heater for optimal performance, and fits in a compact footprint at 72. 31 lbs. NOTICE: This product requires extra freight shipping costs and must be bought separately from

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We offer a 30-day return/exchange service after receiving.
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Definitely better than the old plugs that probably had 80k miles on them. The one star off is because I had a misfire after installing. Not sure if I damaged the plug or what, but a reinstall didn't fix the misfire. In my genius, I rushed to try to gap it and ended up breaking the iridium tip. Put the old plug into cylinder 3 (where the misfire was) and it was fine. Gonna have to get a new single tomorrow at my local shop, but a bit frustrating to get a misfire after install.

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Reviewed in the United States on April 27, 2026

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Britincali

Battle Creek, US

★★★★★ 5

Upgrade from OEM

After seeing a quite ludicrous $403 quote to change 4 spark plugs in a Mazda3 I decided to show my son how easy it is. These were an upgrade from OEM parts. They were gapped perfectly for the car. They took 20mins to fit and work fine.

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Reviewed in the United States on February 11, 2026

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ANDRES FIGUEROA

Houston, US

★★★★★ 5

Very good

The best quality. Runs like new again.

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Reviewed in the United States on March 12, 2026

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Ale

Birmingham, US

★★★★★ 1

garbage spark plugs

misfired after 30 minutes of driving cylinder 4 misfire code, left me stranded on the highway with baby in car. “(9621)” at the end of description is a lie, was not compatible with my vehicle even with compatibility test.

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Reviewed in the United States on May 17, 2026