I think Thule sells a add-on ramp for some of their racks. Youtube has a couple DIY ramps made from PVC and aluminum.

You need both controller and display.

Starting to like your Radmini rack

Not sure how your bag attaches. You could use two webbing straps covering the mounting posts. They would be permanate and provide additional support for the bag. Wood/Alum plate would work too.

Do you have a picture of the issue?

I read your comparison with interest. Thanks for testing them. Is there any difference in weight?

Thanks guys, good tip Altema. I'll turn the key to on next time.

I think there is good reason to use this 80% charge method. The Luna 48v advanced charger just arrived. After setting for 80%, 2A the charger charged to about 87% according to the volts, then went into this oscillation turn off 3-4 sec., turn on 3-4 sec., turn off 3-4 sec., turn on 3-4 sec., ..., can anyone confirm this is normal?
Seemed kind of weird to me!  Thanks

Here is the one I went with =>  https://onway-ebikes.com/products/bike-rear-rack
The link you posted looks like a good one also.

I think the Radrover US is a 500w motor in a 750w housing, so they are probably the same.