Remove battery cover by sliding
to the right to release tabs,
then lift off.
At rear, install 2 batteries
(BA-30) into smaller compartment
Lay first battery on its side and
slide into compartment floor so
top portion (positive electrode)
enters first and touches the flat
battery into same area
battery, so that the
and touches spring
Insert Battery (BA-414/U) into the
larger space, so that the octal
socket, faces you.