Dell XPS 15 9550 - Raised Trackpad Battery Swelling

Hello,

So a couple of days ago I noticed that my trackpad was begining to raise up off my laptop. Some quick google searches indicate that this is happening to others. I purchased the computer 1.5 years ago and it is no longer under warranty. Additionally, it looks like the battery for this laptop has been discontinued. As this laptop was billed as a premium product, I'm concerned by this issue and I refuse to have to buy a new laptop when this one is less than 2 years old. What is the process to get a replacement battery for the XPS 15 9550? As of now it is dangerous and a potential fire hazard if the battery continues to swell.