A leaking battery can leak hazardous electrolyte onto the motherboard, potentially destroying the computer.
Enthusiasts often carefully cut or desolder these old batteries to remove them before they destroy the logic board. 3. "Not User-Serviceable" (Technically) MACINTOSH PRAM BATTERY
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. A leaking battery can leak hazardous electrolyte onto
Without a working PRAM battery, a vintage Macintosh (like the Plus, SE, or early Power Macs) "forgets" its settings every time it is unplugged. This means losing time, date, and sometimes custom SCSI settings, which can hinder the boot process. This means losing time, date, and sometimes custom
For anyone working with old Macs, the first step is often to "recap" the board and deal with the PRAM battery.
Later Power Macintosh models often require a working PRAM battery to function properly.
Thankfully, for many vintage Mac models, a working PRAM battery is not strictly required for the computer to start. The machine will boot, but it will lose settings—a small price to pay for keeping a piece of computing history alive.