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Converting a digital foot scale to rechargeable battery.
MY DC POWER SUPPLY
Big phone battery
Finding a use for weak AAA batteries.
Change 9 volts to 5 volts
Volthaus Electronics Laboratory
Wet Cell Battery out of Food
Convert a Genius speaker to run on 9 volt baterys.
UberCool MiNi RECHARGEABLE POWER SUPPLY
14 amp hour / 140 watt hour lithium ion battery
93% efficient DC to DC Converter
Posted:Jan 28, 2013
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