Power bank 18650 lithium battery digital display charging 5V2.4A dual USB module output with display boost module


Charging efficiency up to 90%@2A
Charging switching frequency 1MHz
Trickle/constant current/constant voltage three-stage charging
With charging current adaptive adapter function
Charging current temperature adjustment function, the charging current automatically decreases as the temperature rises·C/10 charging termination
Integrated charging overvoltage protection and battery overtemperature protection
Synchronous boost output 5.1V
Discharge switching frequency 500KHz
Discharge efficiency as high as 94%
Automatic load recognition, automatic shutdown at light load, original boost output thermal adjustment function
The discharge module is protected against overcurrent, short circuit, overvoltage and overtemperature. 
Press and hold the switch key to turn off the boost module and stop working.
When discharging, the LED digital screen displays the current power, and the display saves about 30 seconds (double-click button to restore the display).
First time After charging and discharging, the system will provide accurate battery instructions.