Hi, I've had my rMBP for around 7 months now and I seem to get very poor battery life. I'm only surfing the web with it with 50% brightness and occasionally using backlit keyboard. With this combination, the rmbp will only last about 3 hours. I've installed iStat pro to monitor cpu and memory usage to see what service or process is eating up my power. I've read the battery guide too. Any idea's or more tests i can do before i book a genius bar appointment. Battery Information: Model Information: Serial Number: D862296333UDNMGA3 Manufacturer: SMP Device Name: bq20z451 Pack Lot Code: 0 PCB Lot Code: 0 Firmware Version: 511 Hardware Revision: 3 Cell Revision: 1150 Charge Information: Charge Remaining (mAh): 7492 Fully Charged: No Charging: No Full Charge Capacity (mAh): 8374 Health Information: Cycle Count: 46 Condition: Normal Battery Installed: Yes Amperage (mA): -1330 Voltage (mV): 11978 Thanks.