How do I know the battery power in a PowerShot camera?
19-Dec-2008
8200405400
Solution
CAUTION
- The position and shape of the operation buttons, screens displayed, and setting items may differ according to the model you use.
When the battery charge is low, 
(Low Battery) will blink in red in the LCD monitor. Change the battery as soon as possible if you intend to use the camera for an extended period of time.
(Low Battery) will blink in red in the LCD monitor. Change the battery as soon as possible if you intend to use the camera for an extended period of time.
If the message [Change the batteries] appears on the LCD monitor, the battery charge is low and the camera cannot be operated.
Recharge the battery immediately.