I now know why the batteries swell, just wondering how widespread the problem seems to be. I’m guessing spdrun that you leave your laptop connected to AC power all the time. I think the battery swelling issue is related to the electronic device trickling charge to battery instead of shutting off the charging sytem entirely. I leave my laptop plugged in always, it has Li-ion battery and has never had a problem. I guess HP is smarter than Samsung in this regard.