Epson EQUITY 386/33 PLUS - Manual (Page 67)

Replacing the Battery
Your computer comes with a 3.6 volt lithium battery that
provides power for the real-time clock and the CMOS RAM.
The real-time clock keeps track of the time for your computer,
and the CMOS RAM stores the information about your system
configuration that was saved by the SETUP program.
This battery lasts approximately three to five years. If it loses
power, you will see an error message when you turn on or reset
your computer.
Contact
your dealer to obtain a replacement
battery or to install the new battery for you. If you want to
replace the battery yourself, you can follow the instructions in
this section.
Note
When the battery runs out, your computer loses the
information stored in the CMOS RAM and the time stored in
the real-time clock. After you replace the battery, run the
SETUP program as described in the Setup Guide to
reconfigure your system and set the real-time clock.
Installing and Removing Options 4-7