Unsupported Semikron 450VDC 300A usa eBay $150
Posted: Sat Oct 18, 2025 8:20 pm
Hey inverter folks! Greentech Auto who i have purchased several batteries from has this very interesting offer on eBay! A 450V 300 amp water cooled Semikron motor controller for only $150!:
https://www.ebay.com/itm/225443377282
Unfortunately the catch is these are custom engineered products for a company that probably went out of business so there is no hope of getting any engineering support or otherwise on them. The package includes nothing else other than the machine although I think I have found the necessary 35 pin connector on AliExpress:
https://a.aliexpress.com/_mNFPDCN
If someone smarter than me knew how to get these up and running it would sure help me the seller and possibly the community! They say they have a few thousand of them. There is a ~10 page tech document describing the pinouts but its kinda hard for me to understand. And only God knows how these would be programmed and configured out the box? Also there is a disclaimer that this isn't intended to be used on a main traction motor but only a secondary or in a hybrid (I don't know why because it seems quite powerful?) I hope someone finds this info helpful or even better if someone can show us how to get one working! Cheers!
https://www.ebay.com/itm/225443377282
Unfortunately the catch is these are custom engineered products for a company that probably went out of business so there is no hope of getting any engineering support or otherwise on them. The package includes nothing else other than the machine although I think I have found the necessary 35 pin connector on AliExpress:
https://a.aliexpress.com/_mNFPDCN
If someone smarter than me knew how to get these up and running it would sure help me the seller and possibly the community! They say they have a few thousand of them. There is a ~10 page tech document describing the pinouts but its kinda hard for me to understand. And only God knows how these would be programmed and configured out the box? Also there is a disclaimer that this isn't intended to be used on a main traction motor but only a secondary or in a hybrid (I don't know why because it seems quite powerful?) I hope someone finds this info helpful or even better if someone can show us how to get one working! Cheers!