Built in cable,super slim,portable and practical design.Durable and safe Li-polymer battery.High value but with competitive price

  • Model: U40
  • Input: DC 5V/2.1A(Max)
  • Output: DC 5V/2.1A(Total)
  • Capacity: 3.7V/4000mAh(14.8Wh)
  • Weight: ~100g
  • Size: 130mm(L)×68.5mm(W)×8.5mm(H)


Product description

Light and Thin Design

8.5mm thickness 110g weight.

Accord with the extreme light design of ergonomics.

Self tape Design

Suitable for Android and apple equipment.

Self integrated charging line, configurable Lighting switch head.

Polymer core

A+ class polymer electric core. Actual capacity of 4000mAh, supporting the maximum 2.1A input and output.

Battery infocapacity4000mAh
useful timeuseful time ≧300  80% capacity
energy content3.7V/4000mAh(14.8wh)
SpecificationinputDC 5V 2.1A
Output  (TOTAL2.0A)USB-A :5V/2.1A
one line:5V/2.1A
charging time2.5 hours
discharging time10W (1.27 hours)
input portmicro USB
output portUSB-A 
Micro USB one line
Temp requirescharging temp0°C~ 40°C
discharging temp-10°C~ 60°C
LED indicatorChargingFull Four lights on
75%~100 Four lights flashes
50%~75% Three lights flashes 
25%~50% Two lights flashes
0%~25% One light flashes
Discharging75%~100 Four lights on
50%~75% Three lights on 
25%~50% Two lights on
5%~25% One light on
0%~5% One light flashes