Makita 18V battery / accu to Bosch tool adapter

I've got a bosch-type blower (gifted) and I actually only have Makita 18V batteries. So I wanted to remix something, but inventor and .stl don't mix well, so I made it from scratch. It's ugly as hell but it works well, good fit and all.
As battery poles I've used one of these cutter blades that can be broken off when dull, you know what I mean (see pics).
Sorry for the bad print quality in the pics, it was actually a fast printed prototype but it works well so I doubt I'll print it again just for looks...
Printed with .6 nozzle .3 layer height in petg, but I guess anything will work.