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My motor is getting hot and it smells too

⟐ Edited March 30, 2026 at 19:35 MST

During another household project, I used the battery as a power supply for something else. Low draw, was not getting hot. Discharged down to 17 volts. Now when I plug it in, charger just shows "bad battery".

Another just shows "bad battery" on the charger when I plug it in. It's practically new but I have no insight on that one.

Anyone familiar with how these opperate that might have a fix at least for the first one? My suspision is that somehow the battery knows it was used for something it should not have been. If that's the case...can it be reset?

Same problem with older 18 volt "Firestorm" battery. This could be age...but every battery (3) shows bad?

⟐ Commented March 17, 2026 at 20:34 MST

Despite having the higher end tools, I still want to keep this one around for jobs I do not want to run my good XR drill on. I have the DCA1820 and 4x 5Ah packs (18650-based) and 2 PowerStacks (5Ah/1.7Ah), so I am wondering what the sweet spot for the older 18V tools is. I did look into a brushless 20V entry level drill on sale for the batteries, but I looked into that years ago before I got 6 20V batteries. I don't think that plan makes as much sense now unless I get some insane deal on a 20V Brushless with 2 2Ah batteries.

⟐ Answer accepted March 08, 2026 at 0:54 MST

⟐ Answer edited March 07, 2026 at 21:55 MST

⟐ Commented February 26, 2026 at 15:25 MST

So I opened up the case on my DeWalt DC970 18V drill and of course, wasn't careful enough and stuff spilled out when I separated the two halves. I caught the motor assembly in time, but I could hear at least a couple parts hit the ground, never to be found again. One of these days I'll retain what I learn....

Anyways, I'm trying to reassemble and I'm stuck on a mystery part

Based on the next image, I'm thinking it's a part of the speed shifter. You can see the bend of something metal holding up the shifter with the motor out that looks very close to the mystery part. Unfortunately though, any image I can find of the shifter online is a picture of just the top of the shifter, nothing of the bottom. Every parts diagram I can find does the same thing; it's sold as a single part.

In the image above, it looks like the part attaches to the motor assembly farther down than the shifter does. But I can't find anywhere for it to attach to anything.

The hole in the center of the part does fit snuggly into the shifter bottom, but of course I don't know which direction it's supposed to go.

Am I missing another part that helps this attach to the motor?

Is this mystery part just a random doohickey I found on my floor and has nothing to do with the drill?

Answers and advice greatly appreciated.

-Art

⟐ Commented February 02, 2026 at 12:25 MST

⟐ Answered January 31, 2026 at 5:13 MST

⟐ Answered January 28, 2026 at 22:44 MST

⟐ Answered January 01, 2026 at 7:14 MST

⟐ Commented December 24, 2025 at 18:22 MST

⟐ Answered December 16, 2025 at 14:17 MST

⟐ Answered November 16, 2025 at 10:25 MST

⟐ Commented November 09, 2025 at 21:18 MST

⟐ Answered October 23, 2025 at 21:29 MST

I have replaced all 5 cells on my Parkside drill v18 battery and the total reading is the same as a working battery. but it is still not working there is no reading on the light indicator like it so dead.

one of the thing ive noticed is the different in the no-working battery having - to the + on 0 but to the - to the c has full volts where the working one have all volts to both the + and c terminal

⟐ Commented October 18, 2025 at 4:48 MST

⟐ Edited December 22, 2025 at 9:29 MST