Cartoon Network

21 October 2011

[DIY] cordless drill conversion

 

I have a cordless 9V Black and Decker drill whose batteries are no longer chargeable. I would like to wire it so I could power it with the 12 volt battery on my tractor. I took the battery apart and noticed there is what looks like a capacitor on top of the existing battery. If I solder jumper wires to the drill will I have to include the capacitor in the circuit? What purpose does the capacitor serve?

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