With 13 dimes, 13 pennies, 13 paperclips, salt water and an ice cube tray, you can make a 1.5-volt battery, powerful enough to light up an LED. Is there any better way to spend $1.43?
[MAKE: Blog – Penny-Powered LED]
Battery, Dime, Ice-Cube-Tray, LED, Paperclip, Penny, Penny-Powered-LED
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