At first it seemed that my SP3's battery was far more efficient on Windows 10 after the update, but something strange seems to happen. Either the battery indicator on the toolbar is giving me the wrong information or something is wrong with the battery. When the battery goes down to around 25-30 percent, my SP3 unexpectedly completely turns off without any warning. I try turning it back on and I receive the image of a battery icon indicating that I must plug it in to charge for use. This is the first time I've ever had this problem.