Hi, My mac will be 1 year old by the end of december. Recently i have been having problems with my battery life. With Wifi and bluetooth on and the screen at full brightness I used to only get about 30 minutes from a full charge. I contacted my local Apple Reseller and they agreed to take a look at my mac which is still under warranty. They reseted the SMC and run a hardware diagnostic tool from my Tiger installation disk. He said that the test did not find anything wrong with my mac but that my battery power % was going down a bit faster than usual. It took about 45 minutes for it to run out of juice. He told me to run a coule more test and bring it back if the problem was recurring. After that visit my mac randomly shuts down when the battery gets down to 42 to 48%. It doesnt happen when the MBP is plugged, only when running from the batteries. I got this from my system profiler: Battery Information: Battery Installed: Yes First low level warning: No Full Charge Capacity (mAh): 2448 Remaining Capacity (mAh): 1028 Amperage (mA): 921 Voltage (mV): 12372 Cycle Count: 150 Does this mean that the battery is dying? I really need your help as my warranty is running out and I want to get a replacement if indeed my battery is going bad.