Apple releases Battery Update 1.2 for MacBook, MacBook Pro

Apple today released Battery Update 1.2 which updates battery firmware and improves battery functionality.

After Battery Update has been installed, each battery you insert into your MacBook or MacBook Pro will be updated automatically. Your computer’s power cord must be connected and plugged into a working power source.

Battery Update 1.2 is available via Software Update and also as a standalone installer.

More info and download link (244KB)  here.

[Thanks to MacDailyNews Reader “Rainy Day” for the heads up.]


  1. I hope this helps. Apple replaced my battery after it burned up on an United Trans-Atlantic flight from the US to Amsterdam. I can called them earlier about this issue of my battery getting too hot…so hot that it burns and was shutting down my MacBook. The CSR said, this was normal and that I was not properly keeping my MacBook kewl (whaterver). Well, while in flight it burned up. Thankfully, no flames…and we did not fall to our death from 36k feet.

    After I contacted Apple and advised them what had happed, they all but begged that I send them the battery so they could examine it. They did not want me to keep it at all!

  2. Dave:

    Tha’s because they need to send it back to the guys who made it and hit them over the head with it. I think they may be Sony batteries. The same thing happened to mine and they took my old one back too and gave me a new one. Besides, what good was it anyway?

  3. Anytime Apple has to replace a major component, in or out of warranty, they keep it – jsut like the core charge on those CV joints for your car you bought at the car parts store. MLB’s, batteries, Hard drives whatever. Very few important parts are not part of this rule.

    Also – if you ever have an isue with a *easily identifiable Flaw* like it doesn’t turn on, it’s swollen, it gets really hot within a few minutes of usage, turn it off, pull out the battery and make an appt at an Apple store. if they diag it as a bad battery, then they can usually replace it right there.

    That hum isn’t the battery, it is the inverter and it’s power consmption. The update is probably unrelated. Probably ^^

    And yes, they run hot. many times hotter than you think it should, esp compared to a powerbook g3 ^_^ . And sometiems they turn off completely unrelated to their battery (RSS / MLB / PS / GPU / FAN issues)

    Write down what it does, when it does it, and make an appt to the store. Bring your adapter and your patience.


  4. I experienced the same and my battery was actually like swelling up. So basically, I could not insert it anymore- However, I didn´t want to either… ” width=”19″ height=”19″ alt=”wink” style=”border:0;” />

    I went to the Apple Store in NY when I was on vacation there and they simply changed it. I think they know about the issue…

  5. Hmmmm. Anyone else getting excessive numbers of ‘USB low Power Notice’ alerts popping up after installing this update?

    I’ve got 4 peripherals attached via monitor hub and constantly get alerts now – even when running power from the mains…


  6. From Apple’s web site:

    Identifying an affected battery

    Affected batteries will have one or more of the following symptoms:

    * Battery is not recognized causing an “X” to appear in the battery icon in the Finder menu bar.
    * Battery will not charge when computer is plugged into AC power.
    * Battery exhibits low charge capacity/runtime when using a fully charged battery with a battery cycle count (as shown in System Profiler) of less than 300.
    * Battery pack is visibly deformed.

    According to Apple the notebooks in question were sold worldwide from February 2006 through April 2007. There is no safety issue with the batteries — the issue is limited to performance.

    “We have issued a software update that is designed to improve battery performance, and consumers can receive a new battery free of charge if their battery continues to have performance issues after installing the software update, even if their computer is out of warranty,” said Apple in a statement provided to Macworld.

  7. “no safety issue with the batteries — the issue is limited to performance.”

    Deformation of the case is an overheating while charging issue. I guess that can loosely be described as a “performance” problem.

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