Just today at work my coworker, with his Arc-LS hanging from his neck tether by a BP mini clip, was changing a pair of 12VDC 38AmpHour storage batteries.
He leaned over a bit too far and the BP mini clip shorted the batteries.
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Lots of smoke, lots of sparks, melted battery lug, and a scorched shirt, but the BP mini clip survived.
The spring had lost all of it's 'sproing' but it was still in one piece -- one hot black piece.
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