Battery Handling
To protect the battery and prevent a decline in performance, do not charge it continuously for more than 24 hours.
•This is a lithium ion battery pack so there is no need to completely use or discharge it before recharging.
•It can be charged at any charge state.
•It takes approximately 2 hours 30 minutes to bring a depleted battery pack to a full charge state (based on standard Canon testing criteria).
•Charge it within a temperature range of 5 to 40 °C (41 to 104 °F).
•The charging time varies according to the ambient temperature and charge state.
•You are advised to charge the battery on the day of use, or one day before, to ensure a full charge.
•Even charged battery packs continue to discharge naturally.
•The battery life should be considered over when the usable time is severely limited even after the prescribed charging time.
•Replace it with a new battery.