Rechargeable battery chemistry usually can’t exactly match the voltage on the old ones. I’ve seen problems with all sorts of stuff by switching to rechargeable AAs. They typically have only 1.2v compared to 1.5v of a regular AA.
But the rechargeable coin battery mod for the Dreamcast is fine, I modded mine years ago and have had no issues.
TIL rechargeable CR2032s exist, and also that their output voltage is higher than standard ones and apparently may run the risk of damaging circuits?
Rechargeable battery chemistry usually can’t exactly match the voltage on the old ones. I’ve seen problems with all sorts of stuff by switching to rechargeable AAs. They typically have only 1.2v compared to 1.5v of a regular AA.
But the rechargeable coin battery mod for the Dreamcast is fine, I modded mine years ago and have had no issues.