Power a cordless tool with a wall socket?
I have been experimenting with multiple scrounged mostly computer transformers and wiring them into the battery packs. Most of them work for a while then they quit. They can add a quick charge to bad batteries and I can use the tool directly while plugged in but once the transformer goes the battery soon runs down. I am using 18 and 19.2 volt tools and am wondering what voltage and amperage transformer would work or is this just a fatally flawed set up? I have no electrical background and my main motivation for this project is to give new life and function to otherwise wasted equipment. I would also like to see these unused tools possibly made available to those in less fortunate areas who could use the tools either from an AC conversion or to run from a 12 volt car battery which is common world wide. Thanks for any input