High Capacity 21700 Battery for Rechargeable Applications

The 21700 battery is a high-capacity cylindrical lithium-ion battery assembly designed for portable electronic products and OEM battery projects.

This 4900mAh configuration provides a nominal voltage of 3.6V and a rated energy of 17.64Wh, offering higher energy storage capacity than smaller cylindrical battery formats.

With a 1S1P configuration, protective components, insulation materials, and wire connection design, this battery provides a practical option for manufacturers developing rechargeable products and custom battery solutions.

Higher Energy Capacity with a Compact 21700 Battery Design

The 21700 format offers a larger cylindrical form factor than traditional battery sizes, enabling manufacturers to evaluate higher-capacity solutions in a compact design.

The battery specifications include:

• Typical capacity: 4900mAh
• Nominal voltage: 3.6V
• Rated energy: 17.64Wh

For portable devices, higher energy capacity can help extend operating time when product dimensions limit the available battery space.

The final battery selection should consider device power consumption, operating conditions, charging requirements, and installation limitations.

3.6 Volt Battery Specifications and Charging Requirements

This 3.6 volt battery uses a nominal voltage commonly found in rechargeable lithium-ion applications.

The main electrical specifications include:

• Nominal voltage: 3.6V
• Charge voltage: 4.2V
• Typical capacity: 4900mAh
• Rated energy: 17.64Wh

The battery should be charged using a compatible lithium-ion charging system that meets the battery specification and device requirements.

The listed charging method is CC/CV, which is commonly used to charge rechargeable lithium-ion batteries.

Lithium Ion Battery Pack Development for OEM Projects

This battery can be evaluated as a component for a customized lithium ion battery pack solution.

OEM manufacturers can combine multiple battery cells in series and parallel configurations to develop a rechargeable battery pack that meets different voltage and capacity requirements.

Before developing a battery pack lithium ion solution, buyers should review:

• Required voltage output
• Target capacity
• Operating current
• Charging system
• Installation dimensions
• Protection requirements
• battery management system

A complete battery design should be confirmed through technical evaluation and sample testing before production.