Overheating & Bulging battery !!! Macbook Pro 2015 mid

Lithium polymer batteries in computers are a wear item, like tires on your car or the soles of your shoes. From time-to-time, It is expected that they will need to be replaced.

This requirement can be set off by many different reasons, including (but not limited to) many charge cycles, exposure to high heat, or simply from the passage of time.

Swelling of a poorly-performing battery means that the time to replace it 'at your convenience' has passed, and it now needs to be done on an near-emergency basis. If it continues to swell, it can cause damage to adjacent components. if it is ignored, the capsule can burst and pose an increased risk of fire.

My wife's 15-in 2015 model WAS serviced under the service program. But just a month ago, we observed that the battery had expanded, and we had to arrange to have the battery replaced. The cost at that time was about US$200.

We had ours replaced in the first year under the service program. My wife uses it mostly as if it were a desktop Mac, and only uses it on battery at random a few days a month, and then generally not run especially low.

We confirmed in actual use that batteries are indeed a wear item, and that ordinary use can and the passage of time can still result in a battery swelling and needing to be replaced. Since ours had already been replaced under the service program, and the program has expired, we paid the about US$200 to have it replaced, and the computer is working great again!

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If you find a device whose Lithium Polymer battery does NOT need to be replaced from time-to-time, I would like to hear about it -- as every device with such a battery we have ever owned has needed a battery replacement after a few years -- heavy use on not.

To obtain battery service for your 2015 model MacBook Pro, start here: Get help with your Mac laptop battery - Apple Support

Otherwise, If you have a question for your fellow Apple users, please ask.

Thank you for your follow-up. Have a nice weekend!