Many early Macintosh computers, such as the Mac SE, have soldered PRAM batteries. While designed to last for many years, these batteries are now decades old and prone to leakage.
Getting Started With Your Vintage Macintosh – Garrett Fuller MACINTOSH PRAM BATTERY
For anyone working with old Macs, the first step is often to "recap" the board and deal with the PRAM battery. Many early Macintosh computers, such as the Mac
Enthusiasts often carefully cut or desolder these old batteries to remove them before they destroy the logic board. 3. "Not User-Serviceable" (Technically) Many early Macintosh computers
A leaking battery can leak hazardous electrolyte onto the motherboard, potentially destroying the computer.
