Please let me know if a camera, in my case Kodak EasyShare CD90, can work from computer USB port without a battery installed (or with a discharged battery).
The input current to the computer is AC, but the computer itself use DC only (the computer power supply do all the wonder). The USB port usually is 5V DC.
OP, I think you may need to read the manual that shipped with the camera.
Are you the same guy who bitches about that every time? Spoilers, but it isn't spam if I put it there in the settings menu. Please STFU about it now. Thanks.