21700 Batteries

The 21700 battery is a type of rechargeable lithium-ion battery that has a cylindrical shape and measures approximately 21mm in diameter and 70mm in length. This battery is commonly used in high-performance electronic devices such as electric vehicles, power tools, and other high-drain applications.

One of the primary advantages of the 21700 battery is its high energy capacity, allowing it to store a large amount of energy in a relatively small size. This translates to longer run times for electronic devices, making the battery a popular choice among users who require high-performance batteries.

In addition to its energy capacity, the 21700 battery also has a long lifespan and can be recharged many times before needing to be replaced. This makes it a more cost-effective and eco-friendly option than disposable batteries.

The 21700 battery is designed with safety features that protect against overcharging, overheating, and short circuits, ensuring reliable and safe performance. When selecting a 21700 battery, it’s important to choose a high-quality product from a reliable manufacturer to ensure optimal performance and safety.

Overall, the 21700 battery is a powerful and reliable power source for high-performance electronic devices, delivering enhanced efficiency, longer run times, and reduced environmental impact to meet the needs of today’s tech-savvy users.

At brightnite.com.au we only use the highest quality cells from companies like Sanyo and Panasonic and all our cell are tested and approved for the flashlights we sell.

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  • KeepPower 10.6A Discharge 21700 5300mAh Protected Li-ion Rechargeable Battery - P2153C

    KeepPower 10.6A Discharge 21700 5300mAh Protected Li-ion Rechargeable Battery – P2153C

    Sale! $29.95
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    Live Count: Geelong Warehouse
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  • KeepPower 8.0A Discharge 21700 5000mAh Type-C USB Rechargeable Protected Li-ion Battery - P2150TC

    KeepPower 8.0A Discharge 21700 5000mAh Type-C USB Rechargeable Protected Li-ion Battery – P2150TC

    Sale! $34.95
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    Live Count: Geelong Warehouse
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  • KeepPower 15A Discharge 21700 5000mAh Protected Rechargeable Li-ion Battery - P2150R

    KeepPower 15A Discharge 21700 5000mAh Protected Rechargeable Li-ion Battery – P2150R

    Sale! $29.95
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  • Eagtac 21700 Rechargeable 5000mAh 3.7V Protected Li-ion Battery

    Eagtac 21700 Rechargeable 5000mAh 3.7V Protected Li-ion Battery

    Sale! $34.95
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  • Fenix 21700 Li-ion Battery ARB-L21-5000U (USB-C Rechargeable)
    Fenix 21700 Li-ion Battery ARB-L21-5000U (USB-C Rechargeable)

    Fenix 21700 Li-ion Battery ARB-L21-5000U (USB-C Rechargeable)

    Sale! $42.95
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    Live Count: Geelong Warehouse
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  • Klarus 21700 Rechargeable 3.6V Li-ion 5000mAh Battery
    Klarus 21700 Rechargeable 3.6V Li-ion 5000mAh Battery

    Klarus 21700 Rechargeable 3.6V Li-ion 5000mAh Battery

    Sale! $36.95
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  • Nitecore NBM41 Portable Battery Magazine
    Nitecore NBM41 Portable Battery Magazine

    Nitecore NBM41 Portable Battery Magazine

    Sale! $14.95
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    Live Count: Geelong Warehouse
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  • KeepPower 10A Discharge INR 21700 5000mAh Unprotected Rechargeable Battery - NH2150

    KeepPower 10A Discharge INR 21700 5000mAh Unprotected Rechargeable Battery – NH2150

    Sale! $19.95
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What are 21700 batteries?

21700 batteries are rechargeable lithium-ion batteries that measure 21mm in diameter and 70mm in length. These batteries are larger than the more commonly used 18650 batteries and have higher capacities, making them popular among enthusiasts of high-drain devices like vape mods, electric vehicles, flashlights and power banks. Due to their larger size and higher capacity, they can provide more power and last longer between charges compared to smaller batteries.

Are 21700 batteries reliable?

Yes, 21700 batteries are generally considered to be reliable. They are manufactured by many reputable brands and have been tested for safety and performance. However, like any battery, their reliability can vary depending on several factors such as the quality of the manufacturing, the conditions in which they are used, and how frequently they are charged and discharged. It is important to use 21700 batteries that are made by reputable manufacturers and to follow proper charging and storage procedures to ensure their longevity and reliable performance.