Epson EQUITY 386/33 PLUS - Manual (Page 70)

5. Connect the battery cable to connector CN1.
battery
cable
connector
CN1
6. Follow the steps in Chapter 3 to replace the computer’s cover.
Then run the SETUP program to reconfigure your system
and reset the time for the real-time clock. See Chapter 2 of
the Setup Guide for instructions.
4-10 Installing and Removing Options