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Custom usb battery booster pack

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Just finished building this battery booster pack from old laptop battery cells
Uses 12 800mAh 14500 lithium cells and the charge/regulation circuit from a rayovac battery booster.

Total power should be about 9600 mAh
Output max current is 800 mA 5 volts on a usb plug.

Pictures here:
https://plus.google.com/101803917570729258243/posts/finzV219AVm
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