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  • ACEBEAM 21700 6400mAh 25A USB-C Rechargeable Battery - 6400mAh 21700 lithium-ion battery with built-in USB-C charging port
  • ACEBEAM 21700 6400mAh 25A USB-C Rechargeable Battery - Upright 6400mAh 21700 rechargeable battery displaying the integrated USB-C charging port design
  • ACEBEAM 21700 6400mAh 25A USB-C Rechargeable Battery - Detailed side profile of the 6400mAh 21700 battery showing the 25A high drain capacity label
ACEBEAM 21700 6400mAh 25A USB-C Rechargeable Battery - 6400mAh 21700 lithium-ion battery with built-in USB-C charging port
ACEBEAM 21700 6400mAh 25A USB-C Rechargeable Battery - Upright 6400mAh 21700 rechargeable battery displaying the integrated USB-C charging port design
ACEBEAM 21700 6400mAh 25A USB-C Rechargeable Battery - Detailed side profile of the 6400mAh 21700 battery showing the 25A high drain capacity label

21700 6400mAh 25A USB-C Rechargeable Battery

$24.90
PRICE BREAKS - The more you buy, the more you save
Quantity2+
Price$22.90

The ACEBEAM 6400mAh 25A 21700 battery is the highest-capacity flashlight battery available. That is 28% more capacity than the common 5,000mAh standard, with a true 25A continuous discharge. The extra capacity powers high-output lights through search missions, camping trips, and extended emergencies, while 25A keeps Turbo stable under heavy load. An integrated USB-C port charges the cell anywhere without a dedicated charger. Fully compatible with Acebeam models including the P20 Mini, H18, E75, and L35.

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    6400mAh 21700 lithium-ion rechargeable battery with extended power output

    Massive 6400mAh capacity for exceptional runtime compared to standard 21700 batteries

    Superior high-drain capability with 25A continuous discharge current for high-intensity flashlights

    Safety design both inside and outside featuring integrated protective circuit and built-in protection

    USB-C built-in direct charging with red and green indicator lights for charge status

    Wide applications suitable for high-performance flashlights requiring 21700 batteries like P20 Mini, H18, E75, L35 2.0

    Detailed technical specifications of 6400mAh 21700 battery including voltage, dimensions, and weight

     

    FieldValue
    Capacity6400 mAh
    Nominal Voltage3.5V
    Continuous Discharge Current25A
    Length77mm ±0.3mm / 3.03" ±0.01"
    Diameter22mm ±0.2mm / 0.87" ±0.01"
    Weight77g / 2.72oz


    Existing reviews
    The best 21700 battery on the market
    This is the best 21700 battery I have ever used, it's capacity of 6400 mAh combined with the 25 A high drain output makes it the perfect battery.
    | 9/10/2026 9:54 PM
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