Archived This flashlight "Lumen" is powered by body heat, not batteries (youtube.com)
submitted ago by rajamanickam
Posted by: rajamanickam
Posting time: 5.1 years ago on
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Archived on: 2/12/2017 1:51:00 AM
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Archived This flashlight "Lumen" is powered by body heat, not batteries (youtube.com)
submitted ago by rajamanickam
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[–] 3020708? ago
It works off the delta between your body heat and the environment. When that delta is larger, aka winter in canada, more power is generated. My concern is what this device does under these extreme conditions. this is a worse case scenario that i am curious about.