Originally Posted by Ludkeh

I've got a Bafang BBSHD mid-drive on one my gravel bikes. It's 1000 Watts with a 52 volt battery. I think it's way more than any tandem would need. Their basic 750 Watt mid-drive would be more than enough for most tandem needs. Also, greater than 750 Watts is illegal in most jurisdictions for road use.