Cordless Electric Drill Repair | Replaced 5S 21V 20A 18650 BMS Charging Protection Board Part-1

In this video (Part-1) I’m going to show you how I have fixed the cordless electric drill issue. Issue= isn’t run for long and short-circuit noise from the BMS. The problem is with the Push Button Trigger Switch DC , which causes later on the issue with the 5S 21V BMS charger board of this drill battery pack. Throughout this video, I have done several troubleshootings to identify the exact causes of failure. Wiring Diagram @ or @ or @ (All diagrams are correct) Part 2 video - Cordless Electric Drill OEM Parts. 1. 5S 18/21V 20A Li-Ion Lithium Battery Pack Battery Charging Protection Board - 2. 21V Charger Adapter - 3. Electric Drill Dustproof Speed Control Push Button Trigger Switch DC Cordless Drill Switch - 4. RS550 21V Motor 12theeth - 5. 21v Cordless Electric Screwdriver BMS with Cases -