My MacBook Air won't stay on unless it its plugged in
This is typical when the current isn’t enough to run the computer.

If you hadn’t had liquid damage, I’d recommend the following:



If you think of a battery storing electrons as a tank stores water - the current is how much volume can come out of the tap. The voltage is the pressure at which the water exits the tap. The battery being “full” or charged is simply the total volume in the tank being “full” regardless of how much pressure and/or volume can come out right now.

Take it in for service or plan to replace the battery would be the logical next steps when your computer doesn’t work with the battery it has.



Since you have liquid damage, I wouldn’t spend any money on the battery since corrosion is likely and you should either pay for a total rebuild of this Mac or keep a good backup until it no longer works at all and replace it.


No sound (speakers/jack) + microphone&#39;s dead after spilling water


Like the linked question - it’s not clear if your battery is the problem or your logic board is pulling too much current or has other problems. Liquid damage can do that - break all sorts of things or multiple sorts of things. The liquid also could be totally external and no damage whatsoever - you have to open and inspect all the parts to know and that’s about an hour of trained technician time in most cases to open / look / close everything.