I hadn't used macOS much after installing 10.13.3 on my Z50-70 because I couldn't get WiFi to work, but after a month or so I've tried again and managed to get it working, however now it seems the battery status doesn't work properly, the few times I used it before it worked as expected, although the battery life was short as it is in Windows since both report that it should be replaced, but the readings were correct.However now it stays in 60% for a long time even when the battery LED turns orange, and then drops to 6%, or reports that the AC adapter is connected when it's not or the other way around.How can I fix this?