Losing my battery life for macbook pro 15" late 2010 very fast

I´m losing my battery life for macbook pro 15" late 2010, System Version: OS X 10.10.3 (14D136) very fast..Any help on this?

Hardware Overview:

Model Name: MacBook Pro

Model Identifier: MacBookPro6,2

Processor Name: Intel Core i5

Processor Speed: 2.4 GHz

Number of Processors: 1

Total Number of Cores: 2

L2 Cache (per Core): 256 KB

L3 Cache: 3 MB

Memory: 8 GB

Processor Interconnect Speed: 4.8 GT/s

Boot ROM Version: MBP61.0057.B0F

SMC Version (system): 1.58f17

Serial Number (system):

Hardware UUID:

Sudden Motion Sensor:

State: Enabled

Message was edited by: horatius43