Griffin has the Griffin USB Reserve Power Rechargeable Backup Battery Pack for $12 - 10% off with coupon code BACK2SCHOOL10 = $11 with free shipping. Features 950 mAh lithium-ion battery, retractable USB plug, LED battery status lights.

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    bubba Ben's cred: 19
    Posted 7:58 am PDT 08/26/11

    I got one of these awhile back for like 7 bucks and they are crap. If you don't use it in a week, it's charge is gone. Unlike my iPhone battery pack I bought from some place in China that retains it's charge if you don't use it.

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    Jnetty99 Ben's cred: 9
    Posted 2:21 pm PDT 08/26/11

    I agree with bubba, it discharges very fast.

    I got it for my iphone 4 and it will charge the phone to a point and then won't charge anymore even when there is still 3/4 of left on the battery.

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