Einhell Battery to Bosch Machine

Fixed adapter to use Einhell batteries on a Bosch machine.

I had my challenges in FreeCAD. 

To screw on the triangle piece, drill the hole fully through and cut an M3 thread into the triangle.
 

You need to solder a resistor to the 2 remaining pins on the Bosch machine. . Soldering in a 10kOhm resistor between the other pins on the machine does the job. in some forums the say 97,3kOhm, but here 100kOhm did not work.

Edit (11. Feb 2026):
 

• replaced the model with a remeshed versions, to get a cleaner print
• added holes to give it more stability. cut a thread and add M3 screws without head for super strenght