1 of 2 people found the following review helpful
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This review is from: PortaPow AA USB Rechargeable Battery Pack + Torch for Smartphones, SatNavs, etc (Accessory)
This product was terrible. If you use VERY expensive batteries it may work. But it just doesn't have enough voltage to charge a smartphone. Buy one of the four battery types from elsewhere, they look liek they should have enough juice to get the job done.
I have given up trying my one of these, it was a total waste of money.