11/07/2023
At a recent visit to a customer, I noticed the case was noticeably bulging on their MacBook Pro, so the customer asked me to replace the faulty batteries.
Apple really cram the components into their laptops and usually the batteries are held in with super-strength double-sided tape. As you can see in the 2 pictures, the expanded batteries were in a bad way and as I removed them they shorted out and started smoking... Thankfully, no harm was done and they spent the afternoon cooling down outside. Lithium batteries are light and very powerful, but if they are damaged or expand like this, you can have a big problem very quickly.
If your laptop seems to have put weight on recently, that is a sure sign that the battery needs replacing, don't leave it, when they go wrong, they go very wrong.