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A 1000 HOUR $5 LED FLASHLIGHT

I had an email in my inbox this morning directing me to an instructables.com post that takes a $5 Eveready flashlight and modifies it so that it runs for over 360 hours.

In brief, the poster (luxstar), modified an Eveready 5109LS LED flashlight by adding a 56-Ohm resistor. The flashlight before modification had a 25 […]