Hi guys, Basically I need some advice regarding to my MBP. Is it normal for my MBP to have it battery drain by 15% over the period of two days when it's being switch off completely. (By selecting shut down in Apple menu). The charge cycle of my battery is 12 and the battery health appear to be normal in system information on macOS. The shop who sold me the laptop say it's normal to have battery drain by 15% over two days of not using as SSD and internal clock require power to run. But this issue only happen recently, aside that the laptop have been working perfectly for the past 3 months Any advice will be appreciated.