Yashica ELECTRO 35 Instruction Booklet page 12

- CHECKING BATTERY - - - - - - - - - - - - - - - - - - -
6
It is necessary to check the battery power
before picture·taking, because sufficient
battery power is required to obtain the
correct exposure.
Press the small, red Battery Check Button
on the back of the camera body. When
the green lamp lights, the battery power is
sufficient.
If
not, the battery should be
replaced .