Help me for sure battery health..!?

Hello my battery informatin is :
Battery Information:
  Model Information:
  Serial Number:          D86048602G1DCMFAK
  Manufacturer:          SMP
  Device Name:          bq20z451
  Pack Lot Code:          0
  PCB Lot Code:          0
  Firmware Version:          301
  Hardware Revision:          000a
  Cell Revision:          175
  Charge Information:
  Charge Remaining (mAh):          2074
  Fully Charged:          No
  Charging:          No
  Full Charge Capacity (mAh):          3770
  Health Information:
  Cycle Count:          781
  Condition:          Normal
  Battery Installed:          Yes
  Amperage (mA):          -1055
  Voltage (mV):          7610
This is OK !?
Or how much to reaplaced battery !?
And pls tips for battery life ....!?

The full charge capacity is small, but if the battery life is enough for you, you can continue using your Mac, as OS X says that the battery is working.
If you think that the battery life is small, take the Mac to an Apple Store or reseller and you will get your battery replaced for $129. To know more about your battery, see > http://www.apple.com/batteries/notebooks.html

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