FREEME ✌ ASTROLUX ST01 SST40/XHP50.2 3500lm EDC 21700 Flashlight Group Buy - 4000lm for $24???

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5000mAh 21700 max out at 9.6A according to Funtastic's test. https://budgetlightforum.com/t/-/65623 4000lm is possible if your cell is able to pull 10A with issues.