Casio EX-FH25 User Manual (en)

Alkaline Battery Life
The actual life of alkaline batteries is affected by a variety of factors, including the 
battery manufacturer, the amount of time the batteries spend in storage before you 
use them, temperature while you are recording, and photographic conditions. As a 
rule, we recommend the use of rechargeable Ni-MH batteries, which have longer 
lives than alkaline batteries.
• When using alkaline batteries, use of the camera in cold temperatures can shorten 
the life of the batteries.
• The PLAY mode requires less power than the REC mode. If you experience a 
problem turning on the camera in a REC mode, try switching to the PLAY mode.
Using Rechargeable Batteries
In the case of rechargeable batteries, use of one of the rechargeable Ni-MH (nickel 
metal hydride) batteries (HR6) listed below is recommended.
• SANYO eneloop (SANYO Electric Co., Ltd.)
• ENERGIZER RECHARGEABLE (Energizer Holdings, Inc.)
• Never mix four batteries of different brands, ages, or charge levels. Doing so 
creates the risk of shortened battery life and can even damage the camera.
• Batteries cannot be recharged while they are loaded in the camera.
Refreshing Rechargeable Batteries
Batteries can start to lose their ability to retain a charge if you do not use them for a 
long time or when you charge them repeatedly without allowing their current charge 
to be used up completely. If this happens, you may be able to restore battery capacity 
by performing the following “battery refresh” operation to fully discharge the batteries.
1. Load the chargeable batteries into the camera.
2. While holding down [MENU], press the power button. This should cause the 
firmware version screen to flash on the monitor screen.
3. Leave the camera on until the batteries run out of power and the camera turns off.
• The battery refresh operation can take as long as 10 hours. The actual amount 
of time required depends on battery conditions.
4. After the camera turns off, remove the batteries and charge them.