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Apple Computing Products:
macOS - Notebook Hardware
MacBook Pro 15-inch 2018 Trackpad issues
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<blockquote data-quote="MacInWin" data-source="post: 1816058" data-attributes="member: 396914"><p>If it's being repaired by Apple, it should come back in as good a shape as when you sent it in. I've had two repaired by Apple and both came back in pristine condition. The problem you had is 99% likely to have been a swelling battery. The battery is directly below the trackpad so when a battery swells, it presses up on the bottom of the trackpad and prevents the trackpad from being depressed to register the "click." My wife had that problem on a MBP and Apple replaced the battery under warranty. Battery swelling is a chemical issue with ALL lithium batteries, and seems to appear randomly. I've had batteries that were worked like dogs and never swelled, and batteries that I pampered that started to swell in just weeks. Not an Apple problem, it's with the chemistry inside the battery that some batteries produce excess gas and that causes the battery to swell. No way to predict which will and which won't swell. It can happen to ANY lithium battery, including camera batteries, phone batteries (all brands), car batteries (if you have an electric car with Lithium batteries), etc. You can abuse a battery by overcharging and force it to swell, but the Apple charging circuits are, like most well-made products, engineered to prevent that happening. And the swelling can start as soon as the battery is manufactured, which means if it sat on a shelf for a few weeks before Apple installed it, and if the Mac sat in inventory for a couple of weeks before you bought it, the battery could well be several months old, which can explain why you are seeing it swelling after just two months of ownership. Eventually all lithium batteries will swell up, usually after 3-5 years of service. Normally a lithium battery is good for 2-3 years before it starts to suffer serious decay of storage of power, so most folks with older batteries end up replacing them because they won't hold a charge before the swelling gets bad enough to create an issue.</p><p></p><p>Because the battery is glued in, Apple just replaces the upper case, which includes the trackpad and keyboard as well as the battery. It's just quicker for them to swap it out and get it back to you that way.</p></blockquote><p></p>
[QUOTE="MacInWin, post: 1816058, member: 396914"] If it's being repaired by Apple, it should come back in as good a shape as when you sent it in. I've had two repaired by Apple and both came back in pristine condition. The problem you had is 99% likely to have been a swelling battery. The battery is directly below the trackpad so when a battery swells, it presses up on the bottom of the trackpad and prevents the trackpad from being depressed to register the "click." My wife had that problem on a MBP and Apple replaced the battery under warranty. Battery swelling is a chemical issue with ALL lithium batteries, and seems to appear randomly. I've had batteries that were worked like dogs and never swelled, and batteries that I pampered that started to swell in just weeks. Not an Apple problem, it's with the chemistry inside the battery that some batteries produce excess gas and that causes the battery to swell. No way to predict which will and which won't swell. It can happen to ANY lithium battery, including camera batteries, phone batteries (all brands), car batteries (if you have an electric car with Lithium batteries), etc. You can abuse a battery by overcharging and force it to swell, but the Apple charging circuits are, like most well-made products, engineered to prevent that happening. And the swelling can start as soon as the battery is manufactured, which means if it sat on a shelf for a few weeks before Apple installed it, and if the Mac sat in inventory for a couple of weeks before you bought it, the battery could well be several months old, which can explain why you are seeing it swelling after just two months of ownership. Eventually all lithium batteries will swell up, usually after 3-5 years of service. Normally a lithium battery is good for 2-3 years before it starts to suffer serious decay of storage of power, so most folks with older batteries end up replacing them because they won't hold a charge before the swelling gets bad enough to create an issue. Because the battery is glued in, Apple just replaces the upper case, which includes the trackpad and keyboard as well as the battery. It's just quicker for them to swap it out and get it back to you that way. [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
MacBook Pro 15-inch 2018 Trackpad issues
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