Former Cordless Drill Is Now Powered by Emergency Generator

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Introduction: Former Cordless Drill Is Now Powered by Emergency Generator

About: "Inaction breeds doubt and fear. Action breeds confidence and courage. If you want to conquer fear, do not sit home and think about it. Go out and get busy." "La inacción engendra la duda y el miedo. La ac...

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I had this nice Craftsman® cordless drill for years. It was a gift from one of my brothers and it served me well for a long time. After repeated use and abuse, the battery stopped holding a charge. I decided not to buy a new battery and convert the drill to be powered using a plug meant for a cigarette lighter socket. I was inspired by Bikeframe's instructable Run a Drill of a Car Battery.

Step 1: Removing the Battery Cells

The first thing that I did was to remove the cells from inside the battery case. I unscrewed the top of the battery to get inside. I found that the battery terminals were held by a cell. I measured the thickness of the cell with a caliper and the cell was 0.88 inches thick (22.3 mm). Since I am also an environmentally conscious person, I made sure that the cells are recycled with my town’s recycling program.
Carefully I pried the positive terminal off the top of the cell. I soldered a wire to it and put it back on the plastic part that held both terminals. To replace the cell that originally held both terminals, I cut a piece of plastic conduit. I cut the plastic conduit with a hacksaw and smoothed the ends with sanding paper. I also drilled a hole to pull the red wire from inside the plastic conduit. Using crimping connectors, I connected the plug wires to the red and preexisting black wire of the battery. I also tied a ty-wrap around the cable and tightened it to make sure that nobody would pull the wires from inside the battery by accident.

Step 2: Working on the Plug

Originally the plug was meant to charge a cell phone but the cell phone does not work anymore. I removed the circuitry from inside the male plug and connected the matching wires together with solderless connectors. I covered both connections with heatshrink to avoid any short circuits. I also removed the fuse that was inside the plug, that was meant to protect the cell phone from a power surge. I replaced it with a screw, to make sure that the drill will work.
I invite you to watch the drill in action when connected with the plug to my emergency generator. Now if the power goes out I can still use my drill.



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    2 Comments

    tell us about the circuit you use...(i couldn't get any detail on text)

    1 reply

    Are you referring to the picture of a little circuit board connected to the plug? Like I said the plug originally served to charge a cellular phone but the phone does not work anymore. I assume that the little circuit modifies the voltage in order to charge the phone.