Shufflepuck Café

As the licensing of Apple's ROMs is restricted, only if you have the Apple computer in question to copy the information over for personal fair use is it possible to even remotely discuss the possibility of doing it here. This board is strictly regulated as to the discussion of copyright infringement.

The SE/30 PRAM battery is not proprietary.

Disassembling it may take some work.

https://store.retrofixes.com/products/macintosh-pram-battery-for-classic-classic -ii-color-classic-se-30-iisi-lc

Offers the correct battery.

http://www.ifixit.com/ may have directions of disassembly.

http://www.lowendmac.com is another resource that might have directions.