Camera says change the batteries with new batteries installed

SOURCE: A310 - Batteries Overheating - Will Not Power On

to make a battery hot some short circuit has to be there u can check it by connecting a wire to both ends of a battery and te battery will become hot in a minute . it is because when electrons get a easy wasy to travel from negative to positive it will travel in a great speed and due to this speed it will collide with other electrons and will make the battery or wire hot . this is the same principal of a fuse wire also when lot of current passes through a wire it gets hot and will be burned]] i think u have got the idea how a batter can get hot if u put the battery in the wrong side also this can happen to ur camera and if there is a short circuit or a wrong battery can also make it hot so check the manuel to find wich type of battery is needed for the camera

SOURCE: Shuts down while using the zoom lever

see this thread :

http://www.fixya.com/support/t225803-canon_powershot_s3_switches_off_when

SOURCE: Camera won't work. Only shows Change Batteries,even with new ones

akaline batteries wont work
only rechargable FULLY CHARGED
if that doesnt work clean battery terminal

SOURCE: Camera says "change batteries" even with new batteries

Hi, Has anyone resolved this issue yet, I have a powershot s2 IS with the same issue - i replace the batteries with brand new duracell's and it says replace batteries i reseat the batteries and it works for a few pics if im lucky then says replace batteries again - any help would be appreciated - Canon offers no solution.

SOURCE: CAMERA MESSAGE SD790 IS

Well, I haven't used a Canon PowerShot SD790 IS Digital Camera before, but I want to suggest this: before you start thinking of putting your camera apart, try to clean the battery terminals and the battery contacts of the camera with clean white paper, then reinsert the pack. Please be very careful when doing this so that you do not break or bend the contacts or terminals; they are usually delicate material.