Universal Remote Control MX-980 ユーザーズマニュアル

Open the battery cover by
depressing the release and
pulling back the cover on the
back of the control. Remove
the cover.

Observe the three contacts for
the battery at the bottom left of
the battery compartment.

Observe the contacts on the
battery 

First, angle the battery so that
the contacts connect to the
contacts inside the battery
compartment. Then let the
base of the battery down.
Apply gentle pressure against
the spring action of the con-
tacts to fit the battery into
place. 

Now, replace the battery
cover.