I have a XPS13 that's about 14 months old. Over the last few months the left side of the keyboard (near z key) has been swelling up. The battery life has also dropped significantly; it be barely last 2 hours whereas it used to last 5-7hrs easily.

I checked online but looks like the battery is not covered after 1 year. Seems like other people had similar issues with Dell laptops as well, how did you end up solving this problem?