- May 14, 2014
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As the title states I left my flashlight on for a least ten hours because it was on when I woke up. No cracked lens and neither the lens nor LED was hot. There is a small chance it was only on for 3 hrs because of an earlier accidental alarm I dismissed but I doubt it. Even still more than enough time to dispell the theory that leaving the LED flashlight for extended periods may crack the lens.
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