Hey dude, do you notice a problem about battery drain after you shutdown your PC? I put the option for saving the battery life, it's about when your battery is at 60% and plugged, the battery can't reach above, it's pretend to save the battery life. I don't know if it's about this option but when I shutdown my PC, the battery is at 60% for sure and sometimes, when I start it, my battery is at 2%??? I did some search and I'm not alone with this trouble.
Have a good day.