Claims long battery life at high power of 35W.With three 18650 batteries at 3,000 mAh. (2,800 is Average for Li-Ion of that type) with a 3.7Vdc rating, You have a 9 Amp-hour battery system.At 35W, the batteries are putting out (35W/11.1V=3.15 Amp-Hr), So in less that 3 hours it will have shutdown.This is not 8-10 Hours.Mathematics is not language based, it is simple numbers.-Mechanical Engineer
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