Epson Equity 286 PLUS - Manual (Page 100)

To disconnect the battery from the main system board, pull
up on the connector plugged into socket CN 1, as shown
below.
battery cable connector
CN1
2. The battery is attached to the computer with Velcro?
Remove the battery by pulling it up from the bottom of the
computer case, as shown below. Then set the battery aside.
5-10 Installing and Removing Options