Involvement:Expert (understands the inner workings) - Ownership:more than 1 month
I bought him to my flashlight which was the same PCB, and she was burned. The current on LED is 2.3A, not 2.5A. I changed two resistors whose values ??were the 0.2ohm(R200 see in the photo) to 0.15ohm and current on LED has 3A and T6 LED can delivery nearly 1000lm. 5 modes works well (Resistors changed High 3A, Mid 1,5A, LOW 150mA).
Good thing for DIY flashlights and replacement. Good stability and current.
Wide range voltage PCB, you can use one or two 18650 cells.
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