M18 to black & decker 18v adapter

This is my remix of https://www.thingiverse.com/thing:31058
it is an adapter to use Milwaukee M18 batteries with black and decker 18 volt tools. It uses the existing upper portion of an old battery. I used standard crimpeable terminals and super glued them into the adapter then soldered the other side of the wire to the existing B&D terminals.
My version consists of 3 parts, the adapter, a support to hold the existing terminal piece in place and a replacement retainer slide to hold the adapt