My one week old xps 9360 has exactly the same "ASF2 Force off" issue, and now that duchboy100 mentioned it I've realized it's about the same 60% battery life when the unexpected shutdown happens, then 50%, etc... and i've also realized the "Remaining battery life" clocks would mass up after the shutdown and reboot, e.g. 1 hr 05 min (50%) which could later become 5 hr 20 min (50%)... I can't find many recent posts with solution except downgrading BIOS. I'm sure many have complained this very issue to Dell. Hope they have a new BIOS update soon!