Specification:
Voltage: 
Charging voltage: 21V 
Single-cell charging voltage: 4.225V
Current :
Continuous discharge current: 8-20A
Overload protection: 
Overload protection single cell detection voltage: 4.225V 
Overload protection delay: 1S 
Overload protection single cell recovery voltage: 4.125V 
Overload protection release delay: 1mS
Over discharge protection: 
Over-discharge single cell detection voltage: 2.7V 
Over-discharge protection delay: 1S 
Over-discharge single cell recovery voltage: 3.0V 
Over-discharge protection release delay: 1S Over- current protection Over-current detection voltage: 0.-0.2V Over 
- current detection current: 30 ± 5A
Overcurrent detection delay: 1S 
Recovery status: automatic recovery
Short circuit protection: 
With or without short circuit protection: yes 
Short circuit detection delay: 250uS 
Short circuit release delay: 1S 
Short circuit detection voltage: 0.5V 
Recovery state: automatic recovery after disconnecting the load
Temperature protection: 
Over temperature protection temperature: 70 ± 5 
Over temperature recovery temperature: 55 ± 5 ℃
Power consumption: 
Working status: 25uA (25 ℃) 
Sleep mode: 6uA (25 ℃)
Internal resistance :
Discharge main circuit internal resistance: 30 ± 5mΩ
Temperature protection:
Working temperature: -40 -85 Relative humidity≤ 75% 
Storage temperature: -40 ℃-125 Relative humidity≤ 75%
Size :
L*W: 56*58.3(mm)
Package Includes:
* Battery Charge Board
Note:
. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
2. Please allow slight manual measurement deviation for the data.