GriffinTECHNOLOGY GP-018-BLK RESERVE POWER BANK 4000MAH - BLACK - (Phones > Power Banks)

Does exactly what it says on the box

does what is says ...happy with it thanku

My previous battery pack is exactly the same but after 2 years has finally packed up. I was confident to buy the same but it must be faulty as the pack itself does not charge. I am very disappointed and will be returning it. I would have given it no stars on my review but can not submit until I put a star.