how many years you had it before it reached the "dead" stage?

No issues with the mower's operation until it "died". Not a battery issue, but the charge indicator when you plug in the recharge is out too, so fuse or major wire connection has failed.

My Ryobi RM 480e is "dead"

^ Quoted from above.

Hopefully you can find someone to get it running again. How old is it? Four or five years?

Ryobi tech support says there in no fuse that creates the fail scenario I describe. Could be a hard wire disconnection. Someone smarter than me can figure it out.

About 4 years ago, I started looking at stuff on Youtube on how to fix and make stuff. I am now building and restoring boardwalk in the local swamp's conservation area. Based on that, I can/could build an entire patio deck. I get a kick out'a doing stuff I felt was beyond my ability....

This is not a criticism of "not doing it anymore." Just an observation. I hope you get the mower fixed at minimum cost.

3H

So, will be using my 22" electric mower to keep the lawn mower....an extra 2 hours of time to get it done. Crazy, mid-July and I still need to mow weekly.