Energize your USB device for extended use with this mophie powerstation 4000 38113BBR external battery that features switchable 500 mAh, 1-amp, and 2.1-amp charging for flexible battery replenishment.
I contacted Mophie because I threw away the packaging so I could not take it back to Best Buy. I have just received a replacement from Mophie so I cannot recommend this product at this time.