Canon POWERSHOT PRO1 User Manual page 23

This is a lithium ion battery pack so there is no need to
completely use or discharge it before recharging. It can be
recharged at any time. However, since the maximum number of
charge cycles is approximately 300 (battery life), you are
recommended to only charge the battery pack after having
discharged it completely to prolong battery life.
It takes approximately 90 minutes to bring a fully discharged
battery pack to a fully charged state (based on Canon's testing
standard).
Charging times will vary according to the surrounding humidity
and battery pack charge state.
The separately sold Battery Pack BP-511, BP-512 and BP-514
can also be used in this camera.
Battery Pack Handling Precautions
Keep the battery pack and camera terminals (
all times. Dirty terminals may cause a poor contact between the
battery pack and camera. Polish the terminals with a tissue or a
dry cloth before charging or using the battery pack.
Do not cover the battery charger with anything, such as a
tablecloth, cushion or blanket, when it is charging. Heat will build
up internally and possibly lead to fire.
Do not charge batteries other than Battery Pack BP-511A, BP-
511, BP-512 or BP-514 with the supplied equipment. This may
cause a malfunction.
The battery pack continues to discharge a small amount when left
in the camera even with the power turned off. This shortens the
battery life. Remove the battery pack from the camera when it is
not in use.
Do not allow any metal objects such as keyrings to touch the "
and " " terminals (Fig. A), as this can damage the battery pack.
To carry the battery pack, or store it during periods of disuse,
always replace the terminal cover (Fig. B) or place it in the
supplied case and store it in a cool, dry place.
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