Pentax *ist Operating Manual page 6

4
PRECAUTIONS FOR YOUR CAMERA
PRECAUTIONS FOR BATTERY USAGE
• Use two 3V lithium batteries (CR2 type).
• Misuse of the battery can cause hazards such as leakage, overheating,
explosion, etc. The battery should be inserted correctly with regard to
polarity (+ and -) marked on the battery and the camera.
• Battery performance may be temporarily hindered in low temperatures,
but will recover in normal temperatures.
• Keep a spare battery on hand for replacement convenience when
shooting outdoors or while traveling.
• If the built-in flash is used continuously, the battery may become warm,
but it does not mean that the battery is faulty; it is one of the battery's
characteristics.
• Replace the batteries at the same time. Do not mix battery brands, type
or an old battery with a new one. It may cause explosion or overheating.