Here's what Omnium have to say:
Supernova front and rear light for E-Bikes
Includes all the products you will need to set up your Supernova lights; front & rear lights and an Omnium seatpost clamp for attaching you rear light.
Front Light: V521s HBM 12V
Rear Light: E3 Tail Light 2 – 12V – Seat Post Version
Weight 160 g
Made In Germany
Here's what Sentient says:
So you have an E-Bike with a 12v light output? Such as the Shimano EP6 or EP8 motor on an Omnium Electric bike?
Sadly you will have to do some minor cutting of wires, but this kit should only take 30 mins to install if your happy to perform simple electrical wiring jobs.
IMPORTANT CONSIDERATION: This handlebar mount (HBM version for 31.8mm) has to go on the bars and cannot be adapted to fit on the rack, such as with the Dynamo Rack Mount. This means that you might blast your passenger in the face with the light if you are carrying a passenger. Or you might block the light if you are carrying a tall load on the rack. In short, this is not the ideal accompaniment to your Omnium E-Bike and we would recommend you try something else! I suppose you might be able to 3d print a spacer from 31.8 to 25.4mm so you can mount the light on the extender bar but this would be highly experimental and we cannot endorse this as an optimal solution. Best of luck tinkerers!
