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Universal and protected Makita battery pack connector
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Universal base to use Makita type battery pack for diy projects; Adding BMS, fuse and XT30 connector
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Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Noncommercial
Using Makita battery packs for diy projects does come with one big drawback: the packs do not include any protection…
I made this battery connector to overcome the risks and breaking the battery pack out to a standard XT30 connector.
BOM
- Makita battery connector (yellow plastic part) e.g. https://a.aliexpress.com/_EuZi47q
- 5S BMS (searching for this on your preferred Chinese shipping site will bring you to the Red module in the picture), nominal capable of 25A, e.g. https://a.aliexpress.com/_EH7k52o
- 10A automotive fuse
- XT30 connector (used this part as housing: https://www.printables.com/model/573357-xt30-plug-housings)
- 4pcs M3x8 countersunk screws
Build:
- Print parts, housing including supports
- Thread M3 thread to housing
- Shorten connectors of yellow battery connector to be flush
- For BMS: since single battery connectors of pack are not broken out, I soldered in each a 3.3k resistor instead of the single cells to the board; only connecting main positive and negative input and output. This will disable balancing feature of the BMS, but under voltage protection will work
- Put everything on place using some hot glue
To come next: dual 65W USB-C PD box to be connected to the XT30!