SP3 i5 128GB here, running fully patched Windows 10 Pro, Office 2016 via 365 University and Norton 2015. I've found over the past week that from fully charged, I'm getting maybe 15 to 20 mins tops before the battery is showing as discharged and the SP3 shuts itself down. The machine was bought November 2014, so is 14 months old. As per the battery life thread, I've run the battery report and if the numbers are right, I'm worried: and If I'm reading all of this right my maximum battery capacity has effectively dropped off of a cliff. Can any of you good learned people concur based on the above numbers, and is there a reconditioning/recalibration tool or is it return to Microsoft time?