Recently I discovered a problem with my power cover. My system is Sp3 with 256G and win10 pro fresh installed. I have also purchased a power cover to extend its battery time. Now the power cover will lose its connection to the system whenever the system is plugged in and standby for a while. It happens so often that I have to reboot the machine 20+ time a day for my work. It is quite annoying. surprisingly, if I leave the system unplugged, my power cover keeps its connection quite well. anybody has some clue on this problem? thank you!