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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Model information
- Source
- Printables
- 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:
- XH-M609: https://www.aliexpress.com/item/33049540052.html?spm=a2g0o.order_list.order_list_main.11.5b111802okqbDx
- 25A fuse and holder: https://www.aliexpress.com/item/4001243079952.html?spm=a2g0o.order_list.order_list_main.28.5b111802okqbDx
- M3 and M2 brass threaded inserts: https://www.aliexpress.com/item/1005004535859664.html?spm=a2g0o.order_list.order_list_main.75.5b111802okqbDx
- M3 M2 screws: https://www.aliexpress.com/item/1005002046005688.html?spm=a2g0o.order_list.order_list_main.301.6e581802HAjNIY
- Cable: https://www.aliexpress.com/item/4000687503400.html?spm=a2g0o.order_list.order_list_main.311.6e581802HAjNIY
- Crimping stuff: https://www.aliexpress.com/item/1005001471688655.html?spm=a2g0o.order_list.order_list_main.260.6e581802HAjNIY
- Car Insurance Fuse Holder Terminal: https://www.aliexpress.com/item/4000501759991.html?spm=a2g0o.order_list.order_list_main.47.6e581802HAjNIY