I got a CV1 used on eBay to use a while waiting for the Rift S to be in stock again.
The right controller appears to be dead now. I've changed the battery from Kodak to Duracell. I've put the working battery from the left one in the right, still nothing.
There's no LED flash when holding down holding down the two buttons. I tried removing both controllers in Oculus Devices, but I can't pair the right one again with no power.
I've taken the battery out for 10 minutes. The battery connector is shiny and clean. I haven't dropped it. It's had no trauma.