Chosen Solution
设备MacBook Air (13-inch, Early 2014) 系统10.14.6 (18G87) 在一年前原装电池在电池栏开始显示需要维修，随着续航的下降，最终的情况是电脑在电量偏低（低于20%）电压不足时会直接主板断电，再次点击开机按钮并无充电提示（就是低电量关机后的红色电池警示logo）。 在更换了第三方电池后和重置SMC后，续航有所改善，但低电量瞬间关机的阀值电量也降低到了10%以内，但并没有得到解决，以至于我已经几个月没见到电量不足5%的提示了。 请问这是电源管理芯片出现了问题吗？ Why does my MacBook air automatically power off when the battery is below 10%? Device MacBook Air (13-inch, Early 2014) System 10.14.6 (18G87) A year ago, the original battery began to display in the battery bar. As the battery life dropped, the final situation was that the computer was powered off when the battery was low (less than 20%). When the voltage is insufficient, the motherboard will be powered off. Click the power button again. Charging prompt (the red battery warning logo after low battery shutdown). After replacing the third-party battery and resetting the SMC, the battery life has improved, but the low-power instantaneous shutdown threshold has also been reduced to less than 10%, but it has not been resolved, so that I have not seen it for several months. A hint of less than 5% of electricity. Is this a problem with the power management chip? Update (09/01/2019) 大部分时间自动关机后，点击电源键电脑会重启并在白苹果界面进度条走到一半再次熄灭。 After the automatic shutdown for most of the time, click the power button to restart the computer and go to the white apple interface progress bar to go out again and then go out again. 这可能是因为电池控件对电池的电量估计错误。 This may be because the battery control estimates the battery’s power incorrectly. 硬件检测报错ppt004 Hardware detection error ppt004
此时你的电池看起来还不错，它的反应如我所料。 鉴于您已更换电池几次，我认为您在电源轨内存在逻辑板问题。 系统是否变湿或有液体溢出？ 您需要找到具有更深技能的人员并访问原理图，以确定哪些导轨失效。 另一种选择就是更换逻辑板。 At this point your battery looks OK, its reacting as I would expect. Given the fact you have replaced the battery a few times I’m thinking you have a logic board issue within the power rails. Did the system get wet or have a liquid spill? You’ll need to find someone with deeper skills and access to the schematics to figure out what rail is failing. The other option is just replace the logic board.
