Canon Powershot A40 User Manual page 161

Problem
The batteries
Batteries are not the
are consumed
right type.
quickly.
The batteries are cold.
Battery terminals are
dirty.
The batteries have not
been used for over a
year.
If rechargeable
batteries: The batteries
have lost their
effectiveness.
Cause Solution
Use only unused AA-
size alkaline batteries
or Canon AA-size NiMH
batteries. (For the
information about
alkaline batteries, see
"Proper Battery
Handling" (p. 19).)
Battery performance
deteriorates at low
temperatures. If
shooting in a cold area,
keep the batteries
warm (by placing them
in an inner pocket, etc.)
until ready to use them.
Wipe them well with a
dry cloth before use.
If batteries are
rechargeable:
Performance should
return to normal after
several charging
cycles.
Discard all 4 batteries
and replace with new
ones.
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