4000mAh PortablePower Source Dual USB From Factory

Specification:

Cell???18650 Li-ionbattery                         

Capacity???4000mah/4400mah/5200mah                                           

Input:  DC 5V1000mA                                  

Dual output??? DC 5V1000mA / 1500mA                                                 

Size???  71*63*23mm                                    

Operatingtemperature???-10???-50???              

Cyclelife???≥500                                           

Chargetime???5-7hours                                 

Color: white andblack