Canon PowerShot Pro 90 IS Software Starter Manual page 22

• After charging the battery, remove it from the camera if the camera will not be
used.
• If the main dial is set to any position other than
pack will stop charging and the household electrical current will power the
camera.
• This is a lithium ion battery pack so there is no need to completely use or
discharge it before recharging. It can be charged at any charge state.
• It takes approximately 100 minutes to bring a fully discharged battery pack to a
charge state of approximately 90% (adequate charge for use). It takes
approximately two more hours to charge it fully (based on standard Canon testing
criteria). Charge it within a temperature range of 5 to 40º C (41 to 104º F).
• Charging times will vary according to the surrounding humidity and battery pack
charge state.
Battery Pack Handling Precautions
• Keep the battery pack and camera terminals (
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 compact power adapter 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-511 with the supplied
equipment. It could damage the camera.
• 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 it from
the camera, attach the supplied terminal adapter and store it in a cool, dry place.
Charge it before use.
• Even charged battery packs continue to discharge naturally. You are advised to
charge the battery on the day of use, or one day before, to ensure a full charge.
Storing fully charged battery packs may shorten battery life and diminish
performance.
• The camera consumes the battery charge when the power is on even when a
function is not being used. To conserve the battery charge, be particularly
attentive in turning the power off.
• Although the battery pack's maximum operating range is 0 to 40º C (32 to 104º F),
the optimal range is 10 to 30º C (50 to 86º F). At cold temperatures, such as those
experienced on ski hills, performance will temporarily decline, reducing the usable
time before recharging.
• If the usable time of a battery pack diminishes substantially even when fully
charged, it should be replaced.
20
Preparing the Camera
while charging, the battery
) clean at all times. Dirty