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 7.2-24V, 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 @6.24 or @10.20 or @11.12 (All diagrams are correct)

Part 2 video - [ Ссылка ]

Cordless Electric Drill OEM Parts.

1. 5S 18/21V 20A Li-Ion Lithium Battery Pack Battery Charging Protection Board - [ Ссылка ]
2. 21V 1.3A Charger Adapter - [ Ссылка ]
3. Electric Drill Dustproof Speed Control Push Button Trigger Switch DC 7.2-24V Cordless Drill Switch - [ Ссылка ]
4. RS550 21V Motor 12theeth 8.8mm - [ Ссылка ]
5. 21v Cordless Electric Screwdriver BMS with Cases - [ Ссылка ]

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