132AppendixBattery HandlingBattery ChargeThe following icon and message will display.Battery Handling Precautionsz Use AA-size alkaline or Canon AA-size NiMH batteries (sold separately) only.While it is possible to use AA-size nickel-cadmium batteries, performance is unreliableand their use is not recommended.z The operating time of the batteries you purchase may not be as long as thebatteries that came with the camera.The performance of alkaline batteries may differ according to brand.z If you are using the camera in cold areas or for a long time, we recommend usingCanon's AA-size NiMH Battery Kit (sold separately).Camera operating time may shorten at low temperatures when alkaline batteries areused. Also due to their specifications, alkaline batteries may expire faster than NiMHbatteries.z Never mix new batteries together with batteries that have been used in otherdevices.The partially used batteries may leak.z Be careful to load the batteries with their positive ( ) and negative ( ) endsin the right direction.z Never mix batteries of different types or from different manufacturers. All fourbatteries should be identical.z Before inserting the batteries, wipe the battery terminals well with a dry cloth.Oil from one's skin or dirtiness may cause a considerable reduction in the number ofrecordable images or reduce usage time.z Battery performance deteriorates at low temperatures, and the battery iconmay display more quickly.If you are using the camera in cold areas and batteries are running down faster thanthey should, you may be able to restore performance by placing batteries in an innerpocket to warm them up prior to use.The battery charge is low. If you plan touse the camera for an extended periodof time, replace the battery as soon aspossible.Change the batteriesBattery charge is insufficient to operate thecamera. Replace the battery immediately.