Battery replacement question

Discussion in 'MacBook Pro' started by socbyset, Sep 7, 2013.

  1. socbyset macrumors member

    Joined:
    Sep 13, 2003
    #1
    I've got a Mid-2010 15" MBP, and I'm wondering if it's time to get the battery replaced. I recently timed a full battery discharge, and it lasted 2 hr 55 min. This was with Photoshop running, so presumably the discrete graphics card was powered up the whole time.

    Does that seem like bad battery life, or is it normal? I think the advertised battery life for this model is 7-8 hours, of course that's just with light use (browsing, word processing). But still, it would be nice to be able to depend on, say, a solid 5 or 6 hours of work away from a power outlet.

    FWIW, in System Information, it says that the battery Cycle Count is 526.

    I just don't want to spend the dough on a replacement battery and find that I only get an extra half hour out of it. Thanks for any replies.
     
  2. Krazy Bill macrumors 68030

    Krazy Bill

    Joined:
    Dec 21, 2011
    #2
    Sounds about right to me with that many load cycles. Actually, it looks pretty good.
     
  3. Lord Flashheart macrumors regular

    Lord Flashheart

    Joined:
    Apr 10, 2007
    Location:
    Cardiff by the Sea, CA
    #3
    Sorry, to jump in, but I have a mid 2010 15" MBP and my battery is completely dead. Where is a good place to get a replacement?
     
  4. DarkSel macrumors regular

    Joined:
    Dec 22, 2012
    #4
    Ebay if you want to do it yourself/Apple if you want the expensive route.
     
  5. socbyset thread starter macrumors member

    Joined:
    Sep 13, 2003
    #5
    Is it comparable to a new battery?
     
  6. Krazy Bill macrumors 68030

    Krazy Bill

    Joined:
    Dec 21, 2011
    #6
    Well, no. Do you expect it to be at that age? The battery "health" degrades over time.

    Again, I think your battery is well within expectations given the use it's had.
     
  7. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #7
    Apple. I wouldn't trust or recommend any non-Apple battery, due to the number of problems reported with "knockoff" batteries. Also, there is no assurance that knockoff batteries have the same charging technology that Apple uses, involving the battery, the MagSafe adapter and the Mac's logic board.
    The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.
     
  8. socbyset thread starter macrumors member

    Joined:
    Sep 13, 2003
    #8
    No, I don't expect that. To clarify my question, I'm not asking whether my battery is degrading normally, I'm wondering roughly how much extra life I could get from a new battery—whether it's worth replacing.

    I didn't keep track of battery life when my MPB was new, so I'm not sure if I can expect a great deal of extra battery life if I replace it.
     
  9. Krazy Bill macrumors 68030

    Krazy Bill

    Joined:
    Dec 21, 2011
    #9
    I believe at the time of introduction, your MBP model was advertised with 8-9 hours of battery life. Since then, I think Apple changed its methodology when making such claims and dropped that down to 7 hours.

    After replacing your battery you can expect your MBP to last like it was new in 2010. I don't know your usage habits though but if you're getting 3 hours now I would "guess" you could get another 2 hours easily if not 3 bringing you up to 6 hours total. That should be a safe estimate.
     
  10. Yahooligan macrumors 6502a

    Yahooligan

    Joined:
    Aug 7, 2011
    Location:
    Illinois
    #10
    Download and run CoconutBattery, this will tell you the current capacity vs new and will give you an idea of how much the battery has degraded since new, then you can determine if you think it would be worthwhile to replace it.
     
  11. socbyset thread starter macrumors member

    Joined:
    Sep 13, 2003
    #11
    Thanks for the tip, downloaded it. It says the current capacity is 84% of the designed capacity, so I guess I wouldn't gain much from replacing.
     
  12. Yahooligan macrumors 6502a

    Yahooligan

    Joined:
    Aug 7, 2011
    Location:
    Illinois
    #12
    Awesome, yeah that sounds pretty healthy for me, at least for a 2010. :)
     

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