Справочник Пользователя для Kenwood TK-3130

In place of the battery pack, you can use 3 AA batterie.  Use
high quality alkaline batteries to enjoy longer periods of
battery life.

Match the four grooves of the
battery pack with the
corresponding guides on the
back of the transceiver.

Slide the battery pack along the
back of the transceiver until the
release latch on the base of the
transceiver locks.

To remove the battery pack, pull
back on the release latch and
slide the pack away from the
transceiver.