Fenix ARB-L21-4000P Rechargeable 21700 Battery

Fenix ARB-L21-4000P Rechargeable 21700 Battery

Marsoni

M251S

$27.95

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

Fenix ARB-L21-4000P Rechargeable 21700 BatteryThe ARB L21 4000P battery supports large current output making it ideal for powering lights and other items that are operated at higher power loads. The maximum current for the ARB L21 4000P is 18A, with a continuous output current of 10A. The higher current allows the 21700 battery longer runtimes at higher levels in flashlights. As with all Fenix rechargeable batteries, the 21700 4000 mAH has three sets of overheat protection, including pressure

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I am 6’4” weigh @ 230 lbs and ordered a 2XL. My dress shirt neck size is 17 inches. If you’re happy with a very loose fitting around your neck, then you’ll be ok with this mock turtleneck shirt. I ordered thinking it would be a snug fit around the neck size, not hanging down @ one inch or more in the front.

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Reviewed in the United States on October 30, 2025

Verified Purchase

Christian Howell

Boise, US

★★★★★ 5

Great for warm weather

Size: Large, Color: Dark Grey

Love these!! I was having a tough time (living in phoenix) and wearing a blazer. It is so hot here that you dont want to wear thick button up shirts with collars etc. T shirts are a bit informal. These are a great mix. Lightweight and breathable, but still a little more dressy than a t shirt. Look good with out the jacket as well. Great for church or nice night out.

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Reviewed in the United States on January 29, 2026