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2012 MAC AIR BATTERY PRO
I’d be inclined to say that perhaps part of the reason it hasn’t happened on my current 13” MacBook Pro yet is in part because it has actually not had as much use as my previous laptops since I have had work laptops provided during that time which got a lot more use. leaving it permanently plugged into the power), or even the wrong power adaptor.įor me personally, I feel that given it has happened with 2 out of the 3 MaBbook’s I have owned it must be a lot more connected with age and the simple failure of some component, whether the battery itself, the overcharge protection or something else. It seems it can also be caused by age, manufacturing defects, not properly cycling the battery over time (e.g. The first being heat, which unfortunately tends to exist inside a computer and is also a byproduct of the gas production inside the battery. It seems there are a few factors that can cause this to happen faster. The gas can’t escape, so the battery expands to keep it inside. Lithium metal builds up on the anode faster than it can dissipate when overcharging occurs and the cathode becomes an unstable oxidising agent.įortunately, the people that came up with these batteries developed safeguards to contain these gases. According to Professor Don Sadoway, Professor of Materials Chemistry at MIT as quoted on TekRevue, overcharging, such as in the event of a failed charge controller, is a pretty common cause. As they age a number of factors can contribute to the expansion of gases inside the battery. I’ve done some research on it and from what I can tell it is normal behaviour of lithium-ion batteries. Why are these batteries expanding so much? The touchpad was completely pushed out from underneath and the front of the case had popped 3 of the 4 screws.Ħ In The End So what’s going on with my MacBook Batteries? I wish I’d taken a photo before completely removing the case, but you couldn’t miss this battery expansion. A swollen lithium ion battery in a MacBook Pro It hasn’t yet exhibited the same symptoms, but at work, I’ve encountered a 2012 model 15” Macbook Pro that has, on a magnificent scale.
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This time the battery was not user-replaceable Lo and behold about 2 years later I started to notice similar symptoms under the trackpad. In 2010 I got one of the early unibody 15″ Macbook Pros. The battery wasn’t lasting very long anymore either so I replaced it. A closer look at it revealed it was bulging in the middle. After about 18 months the battery cover kept popping open. I figured out some time ago that it was the battery because I first noticed it in a 2007 model 15” Macbook Pro that had a user-replaceable battery. Soon that bulge gets bigger and you can’t press the trackpad at all.
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Sometimes it seems like you can only press it when you apply pressure at the correct angles. Soon the trackpad starts to have problems.
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It starts out with what seems like a bit of a bulge under the front of your Macbook. In fact, every single Macbook I’ve ever owned has had this problem, some more than once. It’s a common problem with ageing Macbooks.