Epson EQUITY 386SX/16 PLUS - Manual (Page 93)

If necessary, follow the instructions on page 5-2 to remove
the computer’s cover. Then follow these steps to replace the
battery:
1. Turn the computer so that the front panel is facing you.
The battery is attached to the bottom of the computer
case, just behind the front panel, as shown below.
To disconnect the battery from the main system board,
pull up on the connector plugged into socket CN1, as
shown below.
Installing and Removing Options 5-9