Canon EOS 10D - Manual (Page 23)

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Recharging the Battery
•
Do not recharge any battery pack other than Battery Pack BP-511 or BP-512.
•
The battery continues to discharge a low electrical current even while the camera is
not used. This may lead to excessive battery discharge and a shorter battery service
life.
When not using the camera, remove the battery and attach the protective cover to
prevent shorting. Before using the camera again, be sure to recharge the battery.
•
The time required to recharge the battery depends on the ambient temperature and
battery’s power level.
•
If operating time is sharply reduced even after charging normally, the battery pack
may have exceeded its useful life. Replace it with a new battery pack.
•
The battery pack can operate in temperatures from 0
°C to 40°C (32°F to 104°F),
however for full operating performance, use between 10
°C (50°F) and 30°C (86°F) is
recommended. In cold locations such as ski areas, battery performance is temporarily
decreased and operating time may be reduced.