21700 3.7V 4500mAh Lithium Ion Battery Cell

Description

The lithium ion battery cell 21700 is a rechargeable 3.7V 4500mAh 16.65Wh NMC cell that utilizes LiNiCoMnO₂ (abbreviated as NMC or NCM) cathode materials. Due to higher energy density and longer lifespan than other rechargeable batteries they are often used in applications where dimensions and weight are crucial factors, such as portable devices, mobile electronics, wearables, robots, wireless communication, electric vehicles etc.

Features:

• High energy density. 300Wh/Kg and even higher, 3~4 times of nickel metal hydride battery.
• High working voltage. Operating voltage range 4.2~3.0V, 3 times of nickel metal hydride battery.
• Great safety and high current rate drain capability. UL1642, IEC62133, UN38.3, MSDS passed.
• Long cycle life, more than 800 cycles, low self discharge rate, less than 2%/month self discharge rate.
• Wide operation temperature range. charge: 0~45°C; discharge: -20~60°C; storage: -20~40°C.
• Standard cylindrical sizes. Cells can be connected in series and in parallel to delivery higher power to meet specific requirements.
• Green energy, no harmful metals, RoHS compliance, no pollution, friendly to the environment.

Specifications:

• Name: Lithium ion NMC cell
• Model: 21700
• Nominal Voltage: 3.7V
• Nominal Capacity: 4500mAh
• Rated Energy: 16.65Wh
• Impedance: 25mΩ max
• Charging Voltage: 4.2V max
• Charging Current: 4500mA (1C) max
• Discharging Current: 9000mA (2C) continuous max
• Discharging Cutoff Voltage: 2.75V
• Dimensions(length x diameter): 70.7mm x 21.7mm max
• Weight: 70g approx.
• Environment Conditions: Charge: 0~45°C, Discharge: -20~60°C, Storage: -20~40°C, best 20±5°C for long time storage. Humidity: 85% max.
• Other optional capacity and custom battery pack assembly available