The Canon A480 is rated for 470 shots on rechargeable batteries. At 24fps that is 19.5 seconds of time lapse footage.
That seems quite limiting to me, so what are the options? How do other people solve this problem? I don't want to keep stopping to change the batteries, or hassle a passenger (e.g. the wife) to do it.
I think the ideal solution would be to power the camera from the cigarette lighter. I see a seller on ebay that lists power adapters like that for other A-series Powershots. However I am a bit wary of buying cheap power supplies from sellers on ebay with cheesy-looking listings. There are some mentions on here about problems with car power inverters and switching power supplies.
I've read many topics on here about disabling the LCD, etc. Is that really effective? Can any significant gains be made that way? I would ideally like to safely get to one minute of time lapse footage (so 1440 shots).
What other options are there that people have used successfully? Is there a schematic diagram somewhere for a DIY solution for cars perhaps?