Canon PowerShot A310 User Manual page 19

Camera operating time may shorten at low
temperatures when alkaline batteries are used.
Also due to their specifications, alkaline batteries
may expire faster than NiMH batteries. If you are
using the camera in cold areas or for a long time,
we recommend using Canon AA-size NiMH
Battery Kit NB4-200 (a 4-battery Kit).
While it is possible to use AA-size nickel-
cadmium batteries, performance is unreliable
and their use is not recommended.
Never mix unused and partially used
batteries. Always load two fresh (or fully
recharged) batteries at the same time.
Be careful to load the batteries with their
positive (+) and negative (-) ends in the right
direction.
Never mix batteries of different types or from
different manufacturers. Both batteries
should be identical.
Before inserting the batteries, wipe the battery
terminals well with a dry cloth. Oil from one's skin
or other dirt may cause a considerable reduction
in the number of recordable images or reduced
usage time.
Battery performance deteriorates at low
temperatures (especially with alkaline batteries).
If you are using the camera in cold areas and
batteries are running down faster than they
should, you may be able to restore performance
by placing batteries in an inner pocket to warm
them up prior to use. But be careful that you don't
put the batteries into a pocket together with a
metal key chain or other metallic objects, as these
objects may cause batteries to short-circuit.
If you do not plan to use the camera for a long
time, remove the batteries from the camera and
store them in a safe place. Batteries may leak
and damage the camera if left installed during
prolonged periods of non-use.
WARNINGS
Never use damaged batteries or batteries
whose outer seal is completely or partially
missing or peeled off, as there is risk that
such batteries may leak, overheat, or
burst. Always check the seals on store-
bought batteries before loading them, as
some batteries may come with defective
seals. Do not use batteries with defective
seals.
Preparing the Camera
17