Sanyo Xacti VPC-CG20 Manual For Basic Operation page 24

CAUTION
Does the battery pack appear swollen?
i The lithium-ion battery used in this camera may expand slightly when
stored in a hot environment or repeatedly used, but this is not a safety
hazard. However, a battery that is difficult to insert because it has become
swollen may then be impossible to extract from the battery compartment.
In this case, please discontinue its use and replace it with a new battery.
Do not use the battery with the outer covering or label removed
i Doing so may result in malfunction.
HINT
About the internal backup battery
i This camera's internal battery serves to maintain the date and time
settings, as well as the shooting settings. The backup battery will be fully
charged when the battery pack is kept in the camera continuously for about
2 days. In the fully charged state, the backup battery will maintain the
camera settings for about 7 days.
When not using the camera for a long time, remove the battery pack
i A small amount of power is still used even if the camera is turned off, and it
is therefore recommended that the battery pack be removed from the
camera if it is not going to be used for a long time. Note that when the
battery pack is removed for a long period, the time and date settings may
be cleared. Before using your camera again, be sure to confirm that the
camera settings are correct.
To prolong the life of the battery pack
i Although the battery pack is an expendable item, you can maximize the life
of the battery by heeding the following suggestions.
h Do not leave the battery under the hot summer sun or exposed to other
high-temperature environments.
h Do not continually recharge the battery when it is already fully charged.
After fully charging it once, for example, use it for a while to partially
discharge it before recharging it again.
h When the battery is not to be used for a long time, if possible store the
partially charged (not fully charged) battery in a cool environment.
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