Canon PowerShot G9 - Manual (Page 233)

Appendix 231
Charging the Battery
z Since this is a lithium-ion battery, you need not completely
discharge it before recharging.
z It takes approximately 1 hours 45 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.
z 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.
z
If the performance of the battery diminishes substantially even
when it is fully charged, its life has been exceeded and it
should be replaced.
U.S.A. and Canada only:
The Lithium ion/polymer battery that powers the product
is recyclable.
Please call 1-800-8-BATTERY for information on how to
recycle this battery.