Digital concepts 3.1 mega camera?

put new batteries in and they only last 4 hrs till you need to replace them. any one else with same problem

No I don't have a camera of this make. However, 4 hours when the camera is off? Check your battery connections to see if there is anything between the contacts that could be shorting the battery.

If it happens only when the camera is on, some circuit is busted. Does it take pictures/video correctly?

Best f luck.