The Minolta 9000 requires two AA-size (R6) batteries which supply power for autofocusing, metering, and shutter release. Either alkaline-manganese, nickel-cadmium, or carbon-zinc batteries can be used.
To check battery condition: Set the main switch to ON position, then touch or slightly press the shutter release button. If the LCD starts blinking, battery power is getting low and fresh batteries should be installed.
Fresh batteries should be installed in any of the following cases:
Performance of batteries tend to decrease as they become colder. Before using the camera in cold weather, make sure fresh batteries are loaded. A spare set should be carried in a warm pocket, in case you need to change batteries while shooting. Battery capacity, if weakened by cold, will be restored as their temperature rises again.
For prolonged cold-weather use at approximately 0 degrees Celsius (32 degrees Fahrenheit) or lower, use of AA-size nickel-cadmium batteries is recommended.
The following settings are stored in the camera's memory as long as fresh batteries are installed in the camera: exposure adjustment, film speed, and manual exposure settings.
Whenever the battery holder is removed and reinserted: exposure adjustment is set to +/-0.0, film speed is set to either the ISO setting for DX-coded film in use or ISO 100 for non-DX films, and manual exposure settings are reset to 1/250 second and f/5.6.