Commodore PC10- II & III Battery problem
Posted: Tue Feb 11, 2014 10:45 pmHaving a hard time trying to find info on the Commodore PC10 II & III batteries, I believe they were lithium, but voltage? and replacement or suitable replacement? Any help would be appreciated.
Found some info on the battery, Next question >> if I were to change battery to the more common lithium CR-2032 battery, do the Schottky diodes come in different values and would anyone know what value would be needed?
Thanks,
EDIT:
Systems:Commodore PC10-III
The Commodore PC10-III, PC20-III and Colt are IBM PC XT-compatible computers released by Commodore Business Machines in 1988. All three systems share the same motherboard with the main differences being disk capacity and minor cosmetic variations. Stickers on the motherboard and the back of the case sometimes identify these models as "10c".
Leaky Batteries
The CMOS settings and clock data are maintained by a 3.6v Ni-Cad battery, the same style used by many pre-Pentium PCs. It is located at the front of the motherboard beneath the drive cage. In time these cells tend to leak, and when they do the electrolyte causes corrosion and damage to nearby circuits. If you haven't already, you should remove the original battery before it destroys the motherboard. Leaked electrolyte is significantly basic and can be neutralized with household vinegar.
The machine can continue to operate without a clock battery so long as the user remembers to set the clock on boot. Replacement Ni-Cad batteries are available, as are sockets to install the . In the latter case, however, it is vital that a Schottky diode or similar be installed between the battery socket and the motherboard, as otherwise the machine will attempt to charge the lithium cell with possibly explosive results.
Found some info on the battery, Next question >> if I were to change battery to the more common lithium CR-2032 battery, do the Schottky diodes come in different values and would anyone know what value would be needed?
Thanks,
EDIT:
Systems:Commodore PC10-III
The Commodore PC10-III, PC20-III and Colt are IBM PC XT-compatible computers released by Commodore Business Machines in 1988. All three systems share the same motherboard with the main differences being disk capacity and minor cosmetic variations. Stickers on the motherboard and the back of the case sometimes identify these models as "10c".
Leaky Batteries
The CMOS settings and clock data are maintained by a 3.6v Ni-Cad battery, the same style used by many pre-Pentium PCs. It is located at the front of the motherboard beneath the drive cage. In time these cells tend to leak, and when they do the electrolyte causes corrosion and damage to nearby circuits. If you haven't already, you should remove the original battery before it destroys the motherboard. Leaked electrolyte is significantly basic and can be neutralized with household vinegar.
The machine can continue to operate without a clock battery so long as the user remembers to set the clock on boot. Replacement Ni-Cad batteries are available, as are sockets to install the . In the latter case, however, it is vital that a Schottky diode or similar be installed between the battery socket and the motherboard, as otherwise the machine will attempt to charge the lithium cell with possibly explosive results.