Asked
— Edited

The battery I got lately has the wrong sized tamyia end. I was wondering if its possible to slit off of the wire and put a smaller end. Aka use big end for charging and small end for powering(not at the same time though.)
If you cut off the end and replace it you will only have one end. Unless you are planning to cut into the wire and basically piggyback another connector (like how a Scotchlok Tap Connectors would work).