This Instructable is written on how to choose and build an Efficient *AA* Charger for charging power hungry Smartphones, Mp3 players, Bluetooth headsets, Fitness trackers, Digital cameras and to power other 5V devices too.Why AA's ?AA Batteries are widely available throughout the world including sma...By: Audigi
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from Instructables: exploring - technology - robots http://ift.tt/1yyiRkq
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