Helicopters: Can I put a larger battery in my Ozone?

Going to a larger battery would upset the balance point of the helicopter, requiring weight to be added to the back. An increase in the overall weight would make the motors work harder and possibly wear out faster. They would have to operate at a higher throttle setting to compensate for the extra weight. Overall the increased flight time would be offset by worse flight characteristics, and increased wear and tear on the motors.