I paid $3 for this Black-Decker Firestorm drill on the local garage sale. The owner told me that the drill is OK, but the battery is dead (as expected for NiCd power source). I decided to bring it back to life with external power. It is not easy to find the exact 14.4 V supply, but 12V supplies are ubiquitous. I found one powerful enough AC-DC adapter (Belkin, 12 V, 6 A output) in e-waste bin at the office where I work. Would drill work with it? Make a sense to try. Apart from drill and adapter, I needed 2.1 mm barrel jack, which I bought online.
Step 1: Detaching the Battery
First I detached the battery. Disassembling was easy. I unscrewed four long crews, took off the battery housing top, and removed the battery itself.
Step 2: Removing the Battery
The battery has no value and must be recycled, but electrical terminals I saved to use later in the project.
Step 3: Making Plywood Insert
I made plywood insert to fit battery housing top. On the picture above you can see it with electrical terminals connected by wire to a barrel jack (soldering worked for both ends: terminals and jack contacts). Hole in the side of the top allows inserting adapter terminal into the jack.
Step 4: Assembling the Terminal Unit
Putting the top with insert back on the housing and screwing it was a trivial job.
Step 5: Usage
And here is the test. The drill works OK but not without the glitch. I have to turn it on slow enough, otherwise, it will not start properly. That acceptable tradeoff: for less than five dollars I got the workable and useful tool.
Participated in the
1 Hour Challenge