Battery / calibration power handling different in new MBP/MB/MBA?

Discussion in 'MacBook Pro' started by NC MacGuy, Nov 22, 2008.

  1. NC MacGuy macrumors 603

    NC MacGuy

    Joined:
    Feb 9, 2005
    Location:
    The good side of the grass.
    #1
    Not sure if there are references to this but I've looked.

    All of my previous laptops before the battery was depleted you'd get a warning message, then the computer would go into sleep mode. The sleep led would still do its glowy thing for quite a bit - like hours, then it would go dim. Typically that's when I'd put it on a power supply to calibrate the battery. The contents would be saved to RAM and you'd have to push the power button and get the "ghost screen" with progress bar and desktop as left before shutdown. If you didn't let it go all the way to deep sleep - say you charged it before the sleep led went out, you could put it on a charger and press the space bar and everything would pop up pronto. No ghost screen. No reboot, just like opening the lid or waking it up after the display went to sleep while open.

    Now the new MB, MBP & MBA the same thing happens with the exception that the glowy sleep light led goes out almost immediately after shutdown. If I let it sit for 2 minutes or 4 hours, I still have to hit the power button and get the ghost image w. startup bar. Apple hasn't changed their calibration instructions with new computers from old ones. Hitting the space bar after plugging in charger even if one minute after battery dies has no affect, still have to hit power button.

    Do you really have to let it sit 5 hours or so like I've been used to w. previous notebooks for battery calibration on the new models? I always used the sleep led as a guide as to when to plug it in since when it went out, you knew it was in deep sleep mode. Anyone w. old and new models notice this (or am I being stupid again)?
     
  2. GoCubsGo macrumors Nehalem

    GoCubsGo

    Joined:
    Feb 19, 2005
    #2
    I honestly thought the 5-hour deal was on the older notebooks. Reason I say this is just like you said, the LED goes out almost instantly putting it into a deep sleep, whereas my PowerBook doesn't go into a deep sleep almost instantly like the new MB did. I really think the 5-hour to deep sleep is a moot point now.

    Or maybe I'm misunderstanding you.
     
  3. NC MacGuy thread starter macrumors 603

    NC MacGuy

    Joined:
    Feb 9, 2005
    Location:
    The good side of the grass.
    #3
    And that's my question. Apple hasn't changed their battery cal. instructions for new notebooks. Does one in-fact wait a min. of 5 hours after shutdown for cal. or can it be done immediately? I've always found it a bit of a bummer recalibrating battery because of that 5 hour wait. To do it properly on a well used machine, it takes planning to get that 5 hour wait in and following the instructions as written.

    Hey, is that a Klingon I see in your avatar??;)
     
  4. GoCubsGo macrumors Nehalem

    GoCubsGo

    Joined:
    Feb 19, 2005
    #4
    I think the docs aren't updated because if you think about it, the purpose of the 5 hour wait was for that deep sleep. You knew you had gone into deep sleep mode because opening the lid and pressing anything but the power button would not wake the computer. Now, almost instantly, you're faced with the deep sleep and again, you must hit that power button.

    I'm going to guess that it is a simple error on Apple's part of not updating their documents. They may be busy finding a way to delay the MB Air HDD models a bit longer. ;)

    It is indeed a Klingon with a little face palm action. ;)
     

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