The camera works fine, except when using the screen. I get a low battery indication after only a minute of use, and then the camera shuts down (apparently due to it thinking the battery is too low to operate).
This happens when I use any of three fully charged batteries. When not using the screen, the battery life seems fine, so this is not a battery problem.
For example, I'm shooting without the screen. The battery indicates a full charge. I open the screen and turn it on. The battery indication quickly goes to a low indication, and then the camera shuts off. If I close the screen and turn the camera back on, the battery indication goes back to showing a full charge.
The camera seems to act as if the screen were drawing too much current.
What is the problem, and how is it fixed? Cost?
Hard to tell from the imprecision of the description, whether this "solution" works, or whether it works only on one model of Canon camera, or just the particular camera Nisoca owns. Judging from the hundreds of hits and top position of this issue, Canon cameras have a propensity for falsely reporting low battery condition and then shutting down, even if the batteries have just been changed. I've had this experience with a Canon PowerShot A490, an otherwise good pocket camera that is rendered useless by this serious defect. This failure happens to develop just outside the 1-year warranty period. I consider this kind of failure a product of calculated, engineered obsolescence to force repurchasing of cameras every 1 to 2 years. It's a ripoff of the photography customer. Canon's reputation and sales deserve to suffer for putting defective cameras like this on the market.
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First make sure the batteries are in the correct position/orientation clean both battery terminal and look down inside the battery compartment make sure the "lower" connection is clean (shinny) if not you may need to use a pencil eraser with a piece of sandpaper affixed to it to get down in there and scrub off the corrosion. Another thing and I've run into this myself on a Canon Elan IIe was the battery indicator showed new batteries as dead but the camera attempted too function so, I just used it and used it and withing a few minutes the battery indicator showed the battery state of charge more accurately.
I have connected my PowerShot A2000IS that was doing the same thing for me and I discovered the following: 1) The unit works fine even down to 2.5V providing the supply source (i.e. batteries can deliver 500 mA for a short burst during startup, i.e. when the camera's lens is extended). The camera draws 300mA with screen on after the initial startup current has settled. This means that the camera may not work with batteries like normal alkaline as these don't normally supply large currents, like NI-MH and NI-Cd can. 2) I found that if I lowered the voltage down to (using my bench power supply) that the low power indicator come on at just under 2.5 Vs, BUT once it has indicated low battery, turning the voltage back up to 3V didn't remove the low battery indication. 3) Finally I connected my fully charged (with combined voltage of 2.7V) Ni-Mh rechargeables (old and well used) using wires to allow me to measure their voltage and I found that when I turned on the camera the voltage dipped to 2.3V, but come up after the lens was deployed. Conclusion and recommendations: a) Get some new high quality Ni-Mh cells. b) Don't use Alkaline cells (even Duracell brand might not handle it). c) Forget Ni-Cd as terminal voltage would be at best 2.6V which doesn
The camera will show a low-battery indicator when the batteries start to run down. The only indication of a full charge is the lack of the low-battery indicator on the screen. There is nothing you can set up.
The low-battery indicator will appear near the upper-right corner of the display when the battery level drops. If it's not there then the battery level is fine. When it appears, get ready to replace or recharge the battery.