DEWALT 20V Battery Not Working? [3 Easy DIY Charging Hacks -- but I DON'T recommend the last one...]

If you've got a Dewalt tool battery that won't charge, this video will guide you through the 3 methods to get it to work again. The first method is to make sure the battery is properly seated on the charger. The second method is jumping a low battery with another good battery. Finally, the third method involves resetting the CID (current interrupt device). Unless your battery is chemically or physically defective, one of these methods should guarantee that it will charge once again.

If you're looking to fix a Dewalt battery that won't charge, then this video is for you!

WARNING: Resetting the CID is not recommended under any circumstances! Catastrophic failure and destruction of the battery and surrounding property is a real possibility if the CID "tripped" in order to stop an internal short. Resetting it can cause the battery to enter into "thermal runaway".

Video for educational purposes only.

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Chapters:
00:00 Intro
00:11 Safety Warning!
01:18 Method 1: Seating the Battery in the Charger Correctly
02:00 Method 2: Jumping a dead battery with a Good Battery
04:42 Method 3: Resetting the CID (Current Interrupt Device) Intro
05:17 How to Test for a Bad Cell
08:05 How to rest the CID on a lithium ion cell, and a heavy word of caution!