Poor battery performance on MacBook Pro I have recently bought a very expensive new MacBook Pro with 8 GB memory and now I am frustrated by its very fast battery drainage. Often I see only 2 hours left on full battery charge!
Right now it is only 2:22 hours with no process above 200MB except 1 GB for kernel_task. Also 4 GB memory is free after a &quot;memory clean&quot; (I am also disappointed that Apple does not properly clean memory by itself).
What are possible causes of that low battery performance and how to deal with them?
Any help is greatly appreciated.
EDIT. I do memory clean with this app, hope it does what it says and not spreads a virus or likes.

Battery Information:

  Model Information:
  Serial Number:    D863063R190DGDLBH
  Manufacturer: SMP
  Device Name:  bq20z451
  Pack Lot Code:    0
  PCB Lot Code: 0
  Firmware Version: 406
  Hardware Revision:    2
  Cell Revision:    158
  Charge Information:
  Charge Remaining (mAh):   4976
  Fully Charged:    No
  Charging: Yes
  Full Charge Capacity (mAh):   6696
  Health Information:
  Cycle Count:  133
  Condition:    Normal
  Battery Installed:    Yes
  Amperage (mA):    2870
  Voltage (mV): 12272

UPDATE.
I restarted Mac today in the morning and closed all applications - still only 3 hours. In the afternoon I have closed all applications - and miraculously I saw whopping 8 hours! Then launched Komodo and Chrome and back to 4 hours. Really puzzling...
Your first step towards a solution should be to run Activity Monitor which can be found by searching in Spotlight or Applications > Utilities. Set the tab to CPU and watch for applications that are using a lot of CPU. Investigate the programs or processes that display high usage.

I recently encountered high CPU usage with Google Chrome. Web searches reveal many opinions as to the reason but the best solution is to disable Chrome plugins unless you really need them. When I disabled my plugins, the CPU usage dropped considerably.