This is another makita 18V battery adapterplate which has 3 x M3 mounting Screws.
For electrical connections I use a 643852-2 clone. It is modified with some holes for the cables soldered to two 1 mm thick brass strips (40 x 10 mm) - See HERE. Thanks to Wiseone!
The holepattern fits for a mobile power supply which is connected with 3 x M3 inserts.
See HERE - thanks to sonnguyen88nb for the model.
The adapterplate is also available at https://www.thingiverse.com/thing:1857196
The user re-uploaded this model. The user is not the original author of the model.