BAK N21700CGP 4000mAh unprotected lithium-ion battery. The battery discharge current reaches up to 40 A. It provides higher energy density. It has an optimized electrode design. Suitable for most portable and cordless devices in the world, all power tools and devices with high current loads.

The battery for sale does not have electronic protection against overcharging and deep discharge.
Technical specifications:

Manufacturer: BAK
Model: N21700CGP
Nominal voltage: 3.6 V
Typical capacity: 4000 mAh
Minimum capacity: 3950 mAh
Maximum charging current: 6 A
Maximum charging voltage: 4.2 V
The limit voltage at which the battery must be charged is 2.5 V
Maximum discharge current: 40 A
Operating temperature: charging: 0~ +50 °C, discharging: -20~ +75 °C
Dimensions: 21.3 x 70.3 mm Weight: 68.5 g