Canon IXUS90IS User Manual page 202

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200[
• Since this is a lithium-ion battery, you need not discharge it
before recharging.
• You are advised to charge the battery on the day of use, or one
day before, to ensure a full charge.
• Even charged batteries continue to discharge naturally.
• It takes approximately
2 hours S minutes
to fully charge the
battery
from a depleted
state (based on Canon's
testing
standards).
• Charging it within a temperature
range of 5 - 40 °C (41 - 104 °F)
is recommended.
• Charge times may vary according to the ambient temperature and
the battery's charge state.
• If the performance
of the battery diminishes
substantially
even
when it is fully charged, its life has been exceeded and it
should be replaced.
[
The
Memory
Card
]
• The write protect tab on SD and SDHC memory cards.
j_ite
Protect Tab
--
_
Slide the switch up.
Writing/Erasing
Possible
_
Slide the switch
down•
/
(You can protect
the
f
iomtgeSmaermd o(_ erarda_a
Writing/Erasing
Impossible
• Memory cards are high-precision
electronic devices. Do not
bend them, apply force to them, or subject them to shocks or
vibration.
• Do not attempt to disassemble
or alter the memory card.
• Do not allow dirt, water or foreign objects to contact the
terminals on the back of the memory card. Do not touch the
terminals with your hands or metal objects.
• Do not peel away the original label on the memory card or
cover it with another label or sticker.

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