Canon A580 PowerShot A580 Camera User Guide - Page 171

When two batteries are placed on each side of the charger - test

Page 171 highlights

169 z If you store batteries for a long period of time (about 1 year), it is recommended that you deplete the batteries in the camera and to then store them at room temperature (0 to 30°C/32 to 90°F) in low humidity. Storing them in a fully charged condition can shorten their lifespan or degrade their performance. Again, if you do not use batteries for more than 1 year, fully charge them once a year and deplete them in the camera before storing them. z If the battery usage time has become considerably low despite wiping the terminals and charging them until the battery charger indicator remains lit, this may indicate that the batteries have reached the end of their lifespan. Replace them with new batteries. If you are purchasing new batteries, look for Canon AA-size NiMH batteries. z Leaving batteries in the camera or charger may result in damage from battery leakage. When not in use, remove the batteries from the camera or charger and store them in a cool, dry location. z It takes approximately 4 hours 40 minutes for the charger to fully recharge the batteries after they have been depleted. When two batteries are placed on each side of the charger, recharging will take approximately two hours (as determined by testing at Canon facilities). Charge batteries in an environment where the temperature is in the range of 0 to 35°C (32 to 95°F). z The charging time varies according to the ambient temperature and to the battery charge state. z The battery charger may emit noise while charging. This is not a malfunction. Appendix

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169
Appendix
If you store batteries for a long period of time (about 1 year), it
is recommended that you deplete the batteries in the camera
and to then store them at room temperature (0 to 30°C/32 to
90°F) in low humidity. Storing them in a fully charged condition
can shorten their lifespan or degrade their performance.
Again, if you do not use batteries for more than 1 year, fully
charge them once a year and deplete them in the camera
before storing them.
If the battery usage time has become considerably low
despite wiping the terminals and charging them until the
battery charger indicator remains lit, this may indicate that
the batteries have reached the end of their lifespan. Replace
them with new batteries. If you are purchasing new
batteries, look for Canon AA-size NiMH batteries.
Leaving batteries in the camera or charger may result in
damage from battery leakage. When not in use, remove the
batteries from the camera or charger and store them in a
cool, dry location.
It takes approximately 4 hours 40 minutes for the charger to
fully recharge the batteries after they have been depleted.
When two batteries are placed on each side of the charger,
recharging will take approximately two hours (as determined
by testing at Canon facilities).
Charge batteries in an environment where the temperature is
in the range of 0 to 35°C (32 to 95°F).
The charging time varies according to the ambient
temperature and to the battery charge state.
The battery charger may emit noise while charging. This is
not a malfunction.