Einhell BAS 18 (BAS18) PowerX Adapter

Recently, both 18V NiCd batteries for my Einhell/Bavaria BAS 18 drill stopped working, despite the drill itself being in good condition for its age. Since I also own tools from the new Einhell PowerX Change Series (also 18V), I created an adapter based on the [Adapter Einhell Power X-Change](https://www.thingiverse.com/thing:2830821) by [bastelator](https://www.thingiverse.com/bastelator/designs).

Unfortunately, the existing [Parkside x20 / PowerX to EINHELL 18v nicd](https://www.thingiverse.com/thing:4581834) adapter from [GLoL](https://www.thingiverse.com/glol/designs) didn't fit because my drill has a slightly different shape for the original battery packs (flat surface instead of an elevated surface). Please compare your machine to the images I and [GLoL](https://www.thingiverse.com/glol/designs) posted.

Design:
The upper part was created from scratch, while the lower part was a remix of the [Adapter Einhell Power X-Change](https://www.thingiverse.com/thing:2830821) by [bast