wow. i didn't expect that something like that might happen. maybe a factory problem? let's try and contact apple.
as far as i know there were some cases where some users managed to get a replacement battery even if they were out of warranty, because the batteries should last at least 1000 cycles.
Firstly, sorry for hijacking your thread.
I contacted Apple and they referred me to an Apple Authorized Service Provider or Apple Store. I hope that by visiting a store they might be more inclined to waive the cost for replacing the battery if it is found to be a factory problem. I suspect that the service provider might have less leeway.
The first Service Provider I contacted was fully booked three weeks forward in time, and the earliest Genious Bar appointment was weeks later. Apple is popular in Stockholm.
Bummer. I would say that's not normal. Was the laptop exposed to unusually high temperatures at some point?
Getting the battery replaced costs around $100 if I remember the price that other people have quoted in other threads. I don't know how much AppleCare would have cost you but you might still come out ahead if you just replace the battery.
No high temperatures, no bulges. Mostly plugged in since day one, wasn't as mobile as I thought I might be.
In Sweden APP for MBA13 was/is $290 and battery replacement costs are quoted as $165.
Instead I ordered a used MBA 2013 4/128 with APP to late 2016 for $650 (plus VAT). Haswell and not having to bring a power adapter to work seemed to be a faster solution to being truly mobile again.
(I had already moved on to mainly working on a Mac Mini earlier after installing Yosemite and finding it somehow slow as molasses on the MBA. Mavericks, 16 GB RAM, SSD plus HDD was very welcome.)