Adapter pin Parkside - Einhell Battery Adapter

+++Update 09.03.2024+++

I got feedback that the adapter seems not to fit to everybodys parkside tools. To be honest, I designed the  adapter without having an original parkside battery pack available! I just used my parside saw to do the reverse engineering of the intferace. So it seems like the interfaces of the tool side can vary a bit. Nevertheless, I shared the step file with Tom (@tomTTU) who did some changes. Please be free to use the modified adapter version (einhell-parkside-adapter_v2.stl).  

Model:

This model is an adapter to connect Einhell battery packs with Parkside tools. The design was made with a focus of a simple electrical contact design. It seems like the Parkside tools requires the NTC contact. For this reason, the NTC contact bay is implemented in my design. I recommend to print the adapter in vertical position which will lead to a smoother surface. After printing you need to cut the tiny bridges at the bottom (refer to the picture).

Contact Design:

All you need to build the contact is some sheet metal (preferable copper) with a thickness of 0,6mm and if necessary a soldering iron to apply some tin for better contacting. I made a drawing with the dimensions of the material you need to prepare. Take a look at the pictures too, for a better understanding. It could be helpful if you apply some tin with a soldering iron onto the contacts. 

Recommended printer settings:
Supports: yes

Material: PETG, ABS

Infill: 15-20%