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Lithium Li-ion 18650 Multimeter
Converting a digital foot scale to rechargeable battery.
MY DC POWER SUPPLY
Big phone battery
How to make convert DC to AC using mini-step up transformer
Finding a use for weak AAA batteries.
DC Multi-voltage Regulator
Change 9 volts to 5 volts
Volthaus Electronics Laboratory
UberCool MiNi RECHARGEABLE POWER SUPPLY
Wet Cell Battery out of Food
Posted:Jan 28, 2013
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