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Aspire 21700 Battery

Li-ion, 3800mAh, 3.7V

$11.99Free Shipping On All U.S. Orders Over $50 🚛

Power your vaping mods with the Aspire 21700 Li-ion Battery, boasting a 3800mAh capacity. Designed for extended use, it ensures consistent performance and longevity.

Please note: While our 21700 Li-ion batteries are branded by Aspire, they are universally compatible and can be efficiently used with any device requiring this type of battery, including popular brands such as Smok, Geekvape, and other brands. Rest assured, adding this Aspire-branded battery to your cart will provide a reliable power source for your device, regardless of its brand.

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The Aspire 21700 Li-ion Battery is a reliable power source made for vaping mods and other electrical devices. With a 3800mAh, this battery promises extended use, outlasting standard batteries. The Aspire 3800mAh battery is an INR 3800mAh battery, tested majorly to handle serious current for prolonged periods, ensuring you get the most out of your vaping sessions.


  • Size: 21700
  • Capacity: 3800mAh
  • Voltage: 3.7V
  • INR 3800mAh battery type
  • Designed for vaping mods and other electrical devices

What’s in the Box:

  • 1 x Aspire 21700 Li-ion Battery (3800mAh)


The Aspire 3800mAh battery is a high-performance 21700 battery designed for vaping mods and other electronic devices. Tested rigorously, the Aspire 3800mAh battery can handle significant current for prolonged durations, ensuring reliable power for your devices.


  • Size: 21700 (21mm diameter x 70mm long)
  • Type: Li-ion INR (Rechargeable)
  • Capacity: 3800mAh
  • Voltage: 3.7V
  • Protection: No
  • Style: Flat Top
  • Storage Temperature: Rated 20-60℃

Safety Guidelines:

Battery safety is paramount. Improperly handled batteries can overheat or vent, leading to potential harm. Adhere to the following precautions:

  • A. Ensure the battery wrapper is intact. Any damage, even minor tears, can be hazardous.
  • B. Store batteries safely. Avoid keeping them loose in pockets or bags where they can contact metal objects. Use protective cases.
  • C. Avoid exposing batteries to extreme temperatures.

Additional Safety Tips:

  • Fully charge before first use.
  • Avoid over-discharging (below 2.5V under load or 3V unloaded).
  • Use quality chargers designed for Li-ion batteries.
  • Be aware of the battery’s current limits and never exceed them.
  • Charge only up to 4.2V. Never exceed 4.3V.
  • Monitor batteries when charging. Don’t leave them unattended.
  • For long-term storage, keep batteries at 3.6V – 3.7V in a cool, dry place.
  • Use chargers specifically designed for Li-ion batteries.

Additional information

Weight 2.14 oz
Dimensions 3 × 2 × 1 in


What are the key features of the 21700 Li-ion Battery (3800mAh)

The 21700 battery has a capacity of 3800mAh, a voltage of 3.7V, and is designed for powering vaping mods and other electrical devices.

Can I use a 21700 battery in any device?

It’s important to check your device’s specifications to ensure compatibility with 21700 batteries, as they are larger than 18650 batteries.

Are 21700 batteries rechargeable?

Yes, all 21700 batteries  are rechargeable.

What should I consider when choosing a 21700 battery?

Consider the battery’s capacity, discharge rate, and whether it needs to be flat top or button top based on your device’s requirements.

How do I safely store and handle 21700 batteries?

Store them in a cool, dry place away from direct sunlight and extreme temperatures. Always follow the manufacturer’s guidelines for charging and handling.


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