MacBook keeps restarting, battery says "replace now"

Thanks for a speedy reply!

I didn't remove the battery when replacing the keyboard. It's untouched.

I'm not really sure why my keyboard stopped working but i have a feeling it was some sort of liquid damage from condensation. Like i said, the battery worked fine before i replaced the keyboard and the old keyboard had been dead for 3 months before i decided to change it.

I tend to lift the middle cell group to make sure I have enough clearance to remove the keyboard and get the keyboard cable through. In the 13" models you need to lift the battery as the combo keyboard/track pad cable goes under the battery.

I doubt it was condensation more likely a spill. Did you see any staining on the keyboard cover under the logic board? Inspect the back side of the logic board for staining or signs of corrosion.

I got some water on the screen and didn't realise, I shut the MacBook with the water still there. So it could have been that too, although after opening it up and seeing the water on the screen there didn't seem to be much of it. But i know the keyboard is sensitive. The keyboard stopped working a couple of days after that.

If the battery is having problems from water damage, it seems odd to me that it would only be faulty now, 3 months after the keyboard stopped working and the day after i took the MacBook apart.

It doesn't take much ;-{

Tap water is not clean! It has minerals and salts which are still present on the surfaces after the water has evaporated. Bottled spring water is often heavy with minerals!