Slim dual USB power bank 40000 mah power bank external battery

Specification:

1. Cell Type: Lithium-ion Polymer

2. Capacity: 4000mAh

3. Size:   9*68*111MM

4. Operating Temperature: 10 °C-45 °C

5. Input current:   DC 5V 1A MAX

6. Output current:    DC 5V 2.1A MAX

7. Input Voltage (threshold): 5.0V+/- 0.25V

8. Charging time: 2-3hours

9. Weight: 105g

Mobile power bank Features:

1.100% Full capacity 4000mah mobile power bank

2.Dual usb output 5V1A

3.Ultra slim--only 23mm thin as mobile phone

4.Short cicuit protection

5.Overpower protection

6.Overvoltage protection

7.Overcurrent protectioin

8.Overcharge protection

9.High temperature protection

10.Super ultra working life--1000+times charge

11.High class PVC