RE: XPS 15 9550 touchpad issue that Dell apparently can't fix
Sheri66 is correct. I just called 1-800-822-6031 (the dell out of warranty support number), and they have confirmed this is a known issue. My computer is several months of out warranty but they are replacing the battery free of charge due to this being a known issue. Please call Dell ASAP as having a swollen battery is a huge safety concern.