MBP Power Problems

Discussion in 'MacBook Pro' started by Trius, Feb 11, 2011.

  1. Trius, Feb 11, 2011
    Last edited: Feb 11, 2011

    Trius macrumors 6502a


    Aug 7, 2008
    Let me begin by saying that I've been a long time reader of these forums and after making the switch to Mac last year, I'll never look back :cool:

    That being said, I did my fair share of scouring the forums looking for someone with similar problems, but I could not find anything specific enough, so please forgive me for starting another thread...

    Unfortunately, I'm having an issue with my MBP and any help troubleshooting would be greatly appreciated. I apologize in advance for my rambling post :p

    Ok, so last year I bought a used MBP (pre-unibody, model A1211) on eBay that had a bad logic board. I replaced the LB and everything has been working great.... About 5 months ago the stock battery went out on me, so I bought an aftermarket (I'm sure that was a mistake) battery on eBay and it seemed to work just fine.

    Fast forward to a few days ago...

    I found a great deal on a factory refurbished Aluminum Unibody MacBook 2.4 so I figured It was time for an upgrade. I had bought a 500gb 7200rpm HD and installed it in my MBP when I got it. The AluMB I bought came with a stock 250gb HD. I did some research and discovered that I could just swap the drives so I could keep my 500gb drive with all my info and not have to worry about transferring anything. I planned to put the 500gb in my AluMB and put the stock 250gb in my MBP and put it up for sale on eBay.

    So, I swap the drives and everything seemed to be fine. Having my new AluMB, I sat the old MBP aside and it sat for a few days. When I got it back out to take pics of it, I noticed that it would not turn on. I figured "oh, well the battery is dead" and flipped over the MBP to check the battery indicator... 3 lights. hmm. So I plug in the MBP and it boots up fine, but the magsafe charger stays green (indicating that it isn't charging). I forgot to mention that I was using my new AluMB charger with it. It is a 60w charger (I believe) and the MBP uses an 85w... So I then assumed it was because I was using the 60w charger, and that was why it wasn't charging. That still does not explain why the battery indicator has 3 lights lit.... I go to system profiler and see that the battery health is "Good" and that the battery has a 52% charge, but the MBP shuts off instantly when the magsafe is pulled. I also noticed that my keyboard backlight was not working (classic sign that SMC needs to be reset)... I tried the MBP 85w charger, and it did the same thing. Only runs when plugged in, and will not charge.

    So, I reset the SMC and PRAM and the keyboard backlight came back, but I'm still having issues with the battery. I then thought maybe an OS reinstall would help... I restored the MBP with the OSX recovery disks and everything went well, then when I tried to upgrade to Snow Leopard, the MBP is randomly shutting itself off when I try to boot from the disk....

    Do you think I may have bumped a connection to the left i/o board while I was changing the hard drive? Would that cause this behavior? Or do you think it's just a bad battery? I unfortunately do not have an extra battery to test. I think I may take it to the Apple store and see if they can put another battery in it to test. If it's not the battery, I would suspect maybe a bad I/O board? What do you guys think?
  2. Blu101 macrumors 6502a


    Sep 10, 2010
    Try a new battery, this time from apple. Any warranty on the refurb? If so, take it in...
  3. Trius thread starter macrumors 6502a


    Aug 7, 2008
    I think I will bring it up to the Apple store this weekend and see if they can test a different battery in it... I hope they can test it before I buy a new one since they are far from cheap...
  4. gameface macrumors 6502

    Sep 11, 2010
    Boston, MA
    Bring your charging cable as well and they will test both at the same time. I was having issues just last week and it turned out to be a faulty brick. They just hooked me up with a new one.
  5. GGJstudios macrumors Westmere


    May 16, 2008
    Here are a few things to consider:
    • I would never trust a battery or power adapter that didn't come from Apple. Don't think only about the cost of a battery; think about the value of your MBP.
    • PRAM/NVRAM have nothing to do with power, batteries or charging, so resetting PRAM/NVRAM will not help with these.
    • Resetting SMC does help in resolving battery/power issues.
    • Calibrate your battery properly, to make sure your readings are accurate.
    • Make sure your battery connections are secure.
    • Troubleshoot any problems with your MagSafe power adapter.
    This should answer most, if not all, of your battery questions:

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