Restoration of Rechargeble COB Work Light With Broken Driver

Restoration of Rechargeble COB work light with broken driver + DIY Custom driver circuit + li-ion battery charger board with replaced current resistor to 2.2k Ohms for 0.5A + li-ion battery capacity tester with transistor BC547 and red & green DIFF LEDS + LM317T 1.2V-25V Adjustable Voltage Regulator…
By: fx8

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