I purchased this Sony MD Walkman MZ-R90 minidisc rec/player about 23 years ago to use on my thrice weekly visit to the gym.
It was expensive,£250 all those years ago but I was so pleased with it.
Using the supplied optical cable, I duplicated CDs from my Arcam CD72 player which has an optical out and played Bat Out Of Hell, etc. whilst on the treadmill or rowing machine.
20 years ago, I put it into storage, I had no further use for it.
This morning, I was having a rummage about in the spare bed/junk room and found its safe place. I thought I’d give it a go.
Believe it or not after 20 years of non use, one of those rechargeable batteries has charged and is powering the MD.
I only have one disc left having disposed of the others years ago, it contains a radio program I obviously had an interest in at the time and it plays.
Well, 12 years ago we bought our own Concept 2 rowing machine that we both (Mrs Dashing) use regularly, so I’m bringing this back into use.
Blank discs and the gum stick batteries can still be bought.
I found Bat Out Of Hell was good for the rowing machine but poor for the treadmill, I think it was Satisfaction on the mill or was it Fade Away? 
