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Don't throw away Old Batteries!Genius Invention with Welding Machine that you won't Believe😱
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How To Make Rechargeable 10 Watt Emergency Light | At Home| Table Light | by-ad technical Gyan
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1w vs 3w LED l Testing with 3.7v l 1 watt vs 3 watt Chip LED l Aluminum Heat sink l Brightness test
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