Charge your dying smartphone with this power bank, which has a capacity of 4000 mAh, to consistently keep track of your FB updates.
Use a USB cable to charge this power bank via its microUSB port. A USB cable can be used to charge your smartphone or tablet with the Polymer 4 too. Weighing only 145 grams, this power bank is easy to carry in your pocket. This compact power banku0027s height, width and breadth are 117, 41.5 and 14.3 millimetres, respectively.
The LED indicators on this power bank shows you the power status.