UltraFire 18650 Rechargeable Lithium Ion Battery (3.7V, 4000mAh)

The UltraFire 18650 3.7V 4000mAh Rechargeable Lithium Ion Battery is a cylindrical rechargeable cell designed for portable electronics, battery powered projects and compatible electronic equipment. Featuring a nominal voltage of 3.7V and a rated capacity of 4000mAh as specified by the manufacturer, it can be used with compatible 18650 battery holders and suitable lithium ion charging circuits.

Key Features -

• Standard 18650 rechargeable lithium ion battery

• 3.7V nominal output voltage

• 4000mAh rated capacity as specified by manufacturer

• Rechargeable for repeated use

• Cylindrical cell construction

• Suitable for compatible battery pack assemblies

• Compatible with standard 18650 battery holders

• Suitable for portable electronic devices

• Useful for robotics and DIY electronics projects

• Requires a suitable lithium ion charging system

Specifications -

• Brand: UltraFire

• Product Type: Rechargeable Lithium Ion Battery Cell

• Battery Size: 18650

• Battery Chemistry: Lithium Ion

• Nominal Voltage: 3.7V DC

• Rated Capacity: 4000mAh (As Specified by Manufacturer)

• Rechargeable: Yes

• Cell Type: Cylindrical Cell

• Diameter: 18mm Typical

• Length: 65mm Typical

• Form Factor: 18650

Applications -

• LED flashlights and torches

• Compatible battery pack assemblies

• Portable electronic devices

• Robotics projects

• IoT and embedded systems

• Emergency lighting systems

• DIY electronics projects

• Portable test equipment

• Solar powered devices

• Consumer electronics