Makita battery adapter

Makita battery to Ryobi tool adapter https://www.youtube.com/watch?v=1D4TrLdZCdc need Makita Terminal 643852 or 643838 or, if you prefer http://www.thingiverse.com/thing:863257 M3 10mm bolt and nuts x 4. 5mm x 25mm spring you can buy on ebay x 2. optionally: 0.28" digital voltmeter 6 x 6 x 9 mm tactile momentary push button switch. Sketchup is free software, but if you like, you can go to https://my.sketchup.com/app and view and edit on your web browser too!