Magsafe charger LED light stays orange and not turning green after charging is complete.

HEllo,

I have MacbookPro Early 2011 13inch i5 Aluminium body Non-removable battery.

Battery Information:
Model Information:
Serial Number: XXXXXXX
Manufacturer: DP
Device Name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware Version: 201
Hardware Revision: 2
Cell Revision: 158
Charge Information:
Charge Remaining (mAh): 5353
Fully Charged: No
Charging: Yes
Full Charge Capacity (mAh): 5408
Health Information:
Cycle Count: 328
Condition: Normal
Battery Installed: Yes
Amperage (mA): 536
Voltage (mV): 12531
System Power Settings:
AC Power:
System Sleep Timer (Minutes): 0
Disk Sleep Timer (Minutes): 0
Display Sleep Timer (Minutes): 5
Wake on AC Change: No
Wake on Clamshell Open: Yes
Wake on LAN: No
Current Power Source: Yes
Display Sleep Uses Dim: Yes
PrioritizeNetworkReachabilityOverSleep: 0
Standby Delay: 4200
Standby Enabled: 0
Battery Power:
System Sleep Timer (Minutes): 0
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 0
Wake on AC Change: No
Wake on Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes
Standby Delay: 4200
Standby Enabled: 0
Hardware Configuration:
UPS Installed: No
AC Charger Information:
Connected: Yes
ID: 0x0100
Wattage (W): 60
Revision: 0x0000
Family: 0x00ba
Serial Number: 0xXXXXXX
Charging: Yes

Problem : - System Profiler shows the battery is fully charged but Magsafe charger LED stays orange only it is not turning green after charging is complete.

so far I have tried following things :-

I have tried calibrating battery by procedure here - > http://support.apple.com/kb/HT1490

I have tried reseting SMC by procedure here - > http://support.apple.com/kb/HT3964

I have tried reseting PRam by procedure here -> http://support.apple.com/kb/ht1379