Canon Powershot A40 User Manual page 162

Problem
If using
rechargeable
batteries:
Batteries do
not charge.
Shots are
blurry or
unfocused.
158
Cause
Batteries were placed
in the charger in the
wrong direction.
Poor electrical contact.
Battery terminals are
dirty.
Battery life exceeded.
The camera was
moving when you took
the shot.
Autofocus function
hampered by
obstruction to AF-
assist beam.
The AF-assist beam
has been set to [Off]
through the menu.
Solution
Put batteries back into
the charger in the
correct direction.
• Be sure to set
batteries firmly into
the charger.
• Be sure that the
power cable is firmly
connected to the
charger, and is firmly
plugged in to the
electrical outlet.
Wipe them well with a
dry cloth before
charging.
Replace all 4 batteries
with new ones.
Hold the camera
steady when shooting.
Be careful not to block
the AF auxiliary light
emitter with your finger
or other items.
Set the AF-assist beam
to [On].