How To Prevent Macbook Battery From Swelling. It doesnt work at all. It should be flat.

If you must use the laptop in the meantime use it with an AC Adapter without the battery pack installed. Can I Remove A Swollen MacBook Battery. If your swollen battery was purchased from iFixit take photos of the battery before and after removing it then contact our customer service team for warranty claims or replacement.
Save your business money by treating laptop batteries properly to avoid expansion.
Drain the battery completely at least once a month. Dont leave your laptop in your car on a scorching hot day dont leave your phone charging on the kitchen counter where the afternoon sun bakes it and otherwise do your best to keep the battery cool. Occasional use in the sun is fine but dont store your laptop or smartphone in a hot car or humid environment. However you cannot cure a swollen or defective battery.

