"Is it safe to use MacBook Air without the battery?"에 답변SIMPLE! Yes, it is possible! You press the < POWER > button, then you connect the power cable, you keep the power button pressed for another 5 seconds and then it starts. You need to do this whenever you disconnect the power cord. Some say that if the laptop is only on power, the laptop power decreases by 20% ... now if you work a little more complicated, you buy a battery when you can. But until then you can use it like that.