5 Years Warranty



Acebeam Low Temperature 21700 - 4000mAh


This cold resistant 21700 battery is fitted with Li-ion chemistry that is suitable for use in extremely cold temperatures. Lithium-ion, in general, is the go-to choice for stability, when it comes to changes in temperature. By incorporating a new Li-ion formula that works in -30°, this cold resistant 21700 battery is, therefore, the perfect choice for powering outdoor electronics in the wintertime.

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-30℃ Low-Temperature Resistant high drain battery


Battery Size: 21700

Protected or Unprotected Battery: Protected

Model number: ARC21700L-400A

Battery Chemistry: Li-ion IMR

Nominal Voltage: 3.7V

Nominal Capacity: 4000 mAh

Operating Temperature Range: -30°C to 0°C


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


Warning: Low-temperature batteries CANNOT be charged in low-temperature environments.

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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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