None that you know about

Indeed. I have permanently deleted mine (the very same one) 3 times. They always offer a way to recover it, even years after the so valled “deletion”

I have some thermo regulated valves that require 1.5v as well, so for those I decided to go with regular alcaline batteries. Those are still above 80% charge after 1 year of usage, that is why I decided not going with rechargeables for those trvs

But there are 1.5v rechargeable AA batteries out there.

It would be General Failure reading the disc. I would fsck him up, and replace disc if necessary.

Yes, I know those may be different oses, but I was thinking multiplatform