5 Years Warranty



15A Rechargeable 21700 Battery - 5100mAh (Non USB-C)


L-ion IMR chemistry is potent yet stable, providing a reliable power source for portable electronic devices. The Acebeam 21700 Li-ion battery is rechargeable lithium-ion battery, which is commonly used in high-performance applications. It is high energy density, long lifespan, and relatively low self-discharge rate. Protective boarder to protect against overcharge, over discharge and short-circuiting.

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Battery Size: 21700

Model number: IMR21700NP-510A

Battery Chemistry: Li-ion IMR

Nominal Voltage: 3.7V

Nominal Capacity: 5100 mAh

Estimated Charge Cycles: 500 cycles

Discharge Current: 15A 

Protected or Unprotected Battery: Protected

Length - 2.945" (74.8 mm)
Diameter - 0.827" (21.3 mm)

Existing reviews

Long Runtimes
I use this battery to power all my Acebeam lights and the runtimes are amazing!
Lo | 11/29/2021 12:56 PM
Solid battery.
A quality cell that holds its charge and provides lots of runtime. Comes with convenient plastic storage cases that house two batteries securely.
| 2/27/2024 10:09 AM
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Never forget why you started, and your mission can be accomplished. ACEBEAM is translated into Chinese as "top lighting, a perfect light". It also represents the original ideal of ACEBEAM brand. With our top in the industry technology, manufacturing, customer support, and 5-year warranty, there is no better time to be a part of the ACEBEAM family.

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