3.7V Ii-ion 21700 5000mAh

The 5000mAh Li-ion 21700 battery is a high-capacity cylindrical battery produced by PKNERGY, with dimensions of 21mm * 70mm. Compared to the commonly used 18650 battery, this 21700 battery offers a higher capacity, making it ideal for products that require long-term, stable power supply. As a rechargeable battery, PKNERGY's 21700 battery boasts a market-leading cycle life of over 500 cycles, offering an excellent cost-performance ratio.

Li-ion 21700 Battery Specifications

Dimensions:

Diameter: 21mm   Length: 70mm

Materials:

Battery Type: Lithium-ion (Li-ion)

Voltage:

Nominal Voltage: 3.6V ~ 3.7V   Fully Charged Voltage: 4.2V  Cut-off Voltage: 2.5V ~ 3.0V

Li-ion 21700 Battery Price

As lithium battery prices fluctuate, we use batch pricing based on the quantity required. Our starting price is highly competitive in the market. Contact PKNERGY now for accurate battery pricing.

Do You Offer 21700 Battery Packs?

Yes, we have extensive experience in battery pack design. PKNERGY provides hundreds of 21700 battery pack design solutions each year across various industries. From battery cells, connection terminals, to final battery pack shapes, we understand the critical role batteries play in products. Our dedicated and reliable team will review your battery solutions, and PKNERGY's engineers will assist you in resolving any challenges.

 
Battery pack design solution provided within 1 day！
Sample production within 7 days！
Mass production completed within 30 days!
 

PKNERGY's Advantages

PKNERGY is a China-based factory specializing in lithium battery production. We supply over hundreds of thousands of Li-ion 21700 batteries annually to global markets. Our batteries are widely used in drones, toys, and electronic products. We provide high-quality and cost-effective 21700 battery cells for various industries.