Canon parweshor s400 ixus

The memory card error is a known phenomena for the Canon powershot S400 and has no connection to battery's charge.
Try to take the memory card out of of your camera and to use it in another camera to find out whether it work there (or to place a known good memory card in your camera). In case you are lucky - the problem is with the memory card and not with your camera.
Good luck !

I thought the cards have a little tab on them so they can be "write protected" it is a little plastic tab on the side of the memory card you slide up and down. I know most SD cards have it, CF cards dont so if its anything besides SD memory its probobly the memory card or some little switch or somthing in the camera that tells the camera when the card is in the "Locked" or "Write protected" mode.

Looking at my SD memory cards they have a little arrow on the edge and they say "Lock" pointing down, the slider is up. Move yours both ways, maybe it has a bad connection in the card (im not sure what it actualy does) or its in a position the camera thinks its locked?

I don't wish to appear rude but it's impossible to half charge a battery in 2 minutes. It's the equivalent of putting a teaspoon of petrol in your car. It ain't gonna get far. Give the batteries a proper charge and try again. What's probably happened is you've had just enough power to switch the camera on and then the very low voltage has mucked up the sensors and logic control.

Leave all batteries out of the camera for a while before putting in a fully charged set.

BMW

i had also the same problem and upon tinkering with my memory card, i saw this small metal at the side which was slid downwards, all i did was to slide it up and presto, the CARD LOCKED notice was gone!

more power!

thanks a bunch, i thought i would have to take my camera to a repair shop....

signed,

money in da bank!!!!

i had the same card error problem n just realised i had accidentally flicked up the lock switch on my SD card. thanks!