Rather than focus on what type of Battery.

I like to focus on what Type Of Equipment.

For Example the Arc Flashlight was designed to maximize battery life, especially dead or very poor quality ones.

Here is a movie of a dead battery that only comes on for a half a second in a regular flashlight, but is plenty bright in the arc.




http://www.arcflashlight.com/media/Arcvsmag.wmv













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