21700 Lithium-ion Battery Packs

Li-ion 21700 Battery Pack

CMB designs and manufactures long-lasting and reliable 21700 lithium-ion (Li-ion) battery packs for various industrial applications. To ensure the best possible performance of our battery packs, CMB’s engineering team has tested a range of 21700 Li-ion battery cell models via high discharge rate and wide temperature operation. When it comes to applications, our focused areas of expertise include 21700 battery pack design for:

CMB’s 21700 Lithium-ion Battery Pack Features

  • High-density and compact size
  • Wide temperature of -40℃ to 75℃
  • Essential battery protection with hardware battery management systems (BMS) or more advanced protection with Smart BMS equipped with CANBUS, RS485, and UART
  • Custom nickel sheets welding between battery cells
  • 21700 battery pack packed with shrink wrap or custom enclosure
Request-a-Quote-1

CMB’s Custom 21700 Lithium Ion Battery Packs

CMB icon
CMB are focusing on designing and manufacturing custom 21700 lithium ion battery pack solutions for various applications according to your specific needs from concept to delivery.

21700 battery pack for electric surfboard

Specifications:

  • Made with Samsung INR21700-40T cells
  • Heat radiation and IP68 waterproof rating
  • Special BMS design with a pre-discharge function
  • Customized waterproof housing and connector
  • 70A continuous discharge current and 170A peak current

Learn More

Specifications:

  • Made with Samsung INR 21700-40T cells
  • Waterproof function
  • Customized 30A continuous BMS
  • Wrap shrink or housing options
  • 24-month warranty

Learn More

Specifications:

  • Made with Molicell INR21700-P42A cells
  • BMS specially designed by CMB for this specific application
  • Connection by series and parallels
  • Dedicated charger for charging 6pcs batteries in parallels
  • XT90 connector for discharge and XT60 connector for charge

Learn More

48V 20Ah 21700 E-bike Battery Pack

Specifications:

  • Made with Samsung INR 21700-40T cells
  • Waterproof function
  • Wrap shrink or housing options
  • 24-month warranty

Learn More

43.2V 40Ah 21700 Battery

21700 battery pack for electric surfboard

Specifications:

  • Made with Samsung INR21700-40T cells
  • Heat radiation and IP68 waterproof rating
  • Special BMS design with a pre-discharge function
  • Customized waterproof housing and connector
  • 70A continuous discharge current and 170A peak current

Learn More

18V 8Ah 21700 Battery

Specifications:

  • Made with Samsung INR 21700-40T cells
  • Waterproof function
  • Customized 30A continuous BMS
  • Wrap shrink or housing options
  • 24-month warranty

Learn More

43.2V 12Ah 21700 Battery

Specifications:

  • Made with Molicell INR21700-P42A cells
  • BMS specially designed by CMB for this specific application
  • Connection by series and parallels
  • Dedicated charger for charging 6pcs batteries in parallels
  • XT90 connector for discharge and XT60 connector for charge

Learn More

48V 20Ah 21700 Battery

48V 20Ah 21700 E-bike Battery Pack

Specifications:

  • Made with Samsung INR 21700-40T cells
  • Waterproof function
  • Wrap shrink or housing options
  • 24-month warranty

Learn More

timeline_pre_loader
How We’ll Work Together
Discover
We’ll ask questions via our inquiry about your 21700 battery-specific needs. Please provide the voltage, capacity, specific battery case, and special needs.
Define
We’ll determine the primary 21700 battery pack for device.
Estimation
We’ll estimate you according to the volume of your demand.
Contract
We’ll send you the contract once you confirm your unique 21700 battery pack solution.
Prototype
We’ll provide a sample product for you to test and approve.
21700 Battery Pack Application

Rechargeable Li ion 21700 Batteries Solution FAQ

Why should I choose CMB as my 21700 battery pack manufacturer?

At CMB, we provide advanced customization services and prioritize product quality above all else. That attention to quality not only applies to the way we design and manufacture our 21700 lithium-ion battery packs, it also applies to the materials we source, like our high-quality 21700 battery cells.

What is the difference between 21700 battery packs and 18650 battery packs?

21700 lithium-ion batteries have a longer life cycle, higher density, higher discharge rate, and more power than 18650 batteries.

What 21700 cell brands do you recommend?

For battery packs that require operation at low temperatures, we recommend Moli 21700 cells. For a more cost effective approach, you can opt for Samsung 21700 cells. To ensure your battery pack’s safety, efficiency, and longevity, we always recommend using cells from reputable and trusted brands.

Are 21700 battery packs safe to use?

When used and maintained properly, 21700 battery packs are generally safe to use. However, it’s crucial to follow safety guidelines, avoid mishandling or misuse, and use reputable and quality-tested battery packs to minimize the risk of accidents or failures.

Tailored Customization

Our design team can create custom battery designs for just about any device or machine.

Timely Delivery

Our efficient production and distribution process gets your product delivered in a timely manner.

Quality Guarantee

We stand by our products and guarantee you’ll be happy with your purchase.