Canon POWERSHOT S2 IS User Manual page 164

• Since storing fully charged batteries for long periods of time
(about I year) can shorten their lifecycle or affect performance,
you are recommended to use the batteries in the camera until
they are completely discharged and to store them at normal
temperature (23 °(;/73 °F) or less. If you do not use the batteries
for long periods o_ time, charge them fully and discharge them
being wiped and the battery charger's indicator remaining lit, it is
possible that the batteries have reached the end of their lifespan,
Switch to different, unused batteries. If you are purchasing new
batteries, look for Canon's AA-size NiMH batteries NB4-200 [a NB-
2AH four-battery set).
• Leaving batteries in the camera or charger may damage it causing
battery leakage. Remove batteries from the camera or charger and
store in a dry cool location when not in use.
_, t takes approximately 250 minutes for the charger to fully recharge the batteries (as determined by testing at Canon facilities). Please do not
charge batteries in areas where the temperature is outside the range
of 0 to 35°C (32 to 95 °F).
Charging time varies according to ambient temperature and to the
batteries' initial charge state.
The battery charger may emit noise while charging. This is not a
malfunction.
_, Battery/Charger Kit CBK100 can also be used. Use Canon AA-size
batteries NB-1AH with the charger included in the CBK100 kit,
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