LG LGL86C - Manual (Page 17)

16 L86C | User Guide
Installing the battery
Before you can start exploring your new phone, you'll need to set it up.
1. To remove the back cover, hold the phone firmly in one hand. With
your other hand, lift off the back cover with your thumbnail as shown
in figure.
NOTE: Put your thumbnail into the Charger/USB Port hole and lift off the
back cover.
2. Insert the battery into place by aligning the gold contacts on the
phone and the battery and pressing it down until it clicks into place
.