late 2011 macbook pro 13" battery life not good
I can leave my laptop plugged in all night turned off, and in the morning it only has 99% battery. It seems to quickly discharge. After about an hour an a half, I am down to 50%. I bought this computer in October. I has intel core i7 with 4GB 1333 MHz DDR3 memory. This does not seem normal. If it is in sleep mode, the battery will drain over night if not plugged in. That also does not seem right. I appreciate any help.
Here is the system info:
Battery Information:
Model Information:
Serial Number: deleted
Manufacturer: SMP
Device Name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware Version: 201
Hardware Revision: 000a
Cell Revision: 158
Charge Information:
Charge Remaining (mAh): 2908
Fully Charged: No
Charging: No
Full Charge Capacity (mAh): 5454
Health Information:
Cycle Count: 35
Condition: Normal
Battery Installed: Yes
Amperage (mA): -1922
Voltage (mV): 11176
System Power Settings:
AC Power:
System Sleep Timer (Minutes): 16
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 5
Wake on AC Change: No
Wake on Clamshell Open: Yes
Wake on LAN: Yes
Display Sleep Uses Dim: Yes
PrioritizeNetworkReachabilityOverSleep: 0
RestartAfterKernelPanic: 15
Standby Delay: 4200
Standby Enabled: 0
Battery Power:
System Sleep Timer (Minutes): 5
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 5
Wake on AC Change: No
Wake on Clamshell Open: Yes
Current Power Source: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
RestartAfterKernelPanic: 15
Standby Delay: 4200
Standby Enabled: 0
Hardware Configuration:
UPS Installed: No
AC Charger Information:
Connected: No
Charging: No
MacBook Pro, Mac OS X (10.7.2), 750 gb hard drive, 4 gb ram, i7 pro