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18v Einhell tool to Bosch battery adapter — image 1
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18v Einhell tool to Bosch battery adapter

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The adapter makes it possible to use an 18v Bosch battery on an Einhell 18v tool.

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Category
Electronics
License
Creative Commons — Attribution — Noncommercial

The adapter makes it possible to use an 18v Bosch battery on an Einhell 18v tool. To do this, I connect the positive pole and the negative pole of the Einhell tool to the Bosch battery. I have also connected the pole for the temperature sensor of the tool to that of the battery and have not experienced any problems so far.

To protect the components, I have installed an XH-M609, which protects the battery from deep discharge. I have also installed a 25A car fuse. The batteries can actually withstand even higher voltages, but I thought 25A should be enough. But both parts are optional, you can also leave them out and wire the pins direcctly.

There are 4 M3 brass threaded inserts in the case so that you can screw the lid tight. As usual with Einhell batteries, there is also a safety button which you have to press to remove the adapter. To secure the button against slipping, I have attached an M2 brass threaded insert and used a short M2 screw. I used an 8mm x 25mm so that the safety button works like an Einhell battery. You can see this in more detail on the cross-sectional image.

Use the adapter at your own risk.

Here is a list of the parts I used:

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