4 AA Canon cameras are major offenders for killing AAs quickly nearly 100% of the time with the S2IS being one of the infamous models. I know someone who used one regularly but hasn’t since it gives the E18 error once in a while - they kill batteries like they’re going out of style unless you use 2500mAh+ NiMh cells($$) or Primary Lithium($$$). NiMh is ultimately cheaper as you don’t need to throw away expensive batteries, but don’t last as long.
My SX150 (2 AA) was also horrible before the battery cover broke and I couldn't find a reasonably priced one, so I never repaired it. I can still try the repair it as I have it, but it's not easy to find one that works since I need the shell as that's also broken and those are usually busted along with the cover. I tried to see if it's feasible and it wasn't last time I checked, plus the battery issue - I don’t think it will ever be.
crwdns2934105:0crwdne2934105:0
crwdns2934113:0crwdne2934113:0
crwdns2915270:0crwdne2915270:0
crwdns2889612:0crwdne2889612:0
2
crwdns2944067:02crwdne2944067:0
Is there any corrosion on battery terminals inside camera?
crwdns2934271:0crwdnd2934271:0 Michael Douthat crwdne2934271:0
I tried to clean the contacts, but the camera still didn’t work, so I brought it in for repair. It turned out that the problem was indeed dirty contacts. I just wasn’t able to get at them well enough to clean them properly myself. So now everything works.
crwdns2934271:0crwdnd2934271:0 Susan K crwdne2934271:0