2012 Macbook Pro 13'' - Battery Unavailable / Battery Life indicator with one Led on

[CK1_pt]

Hello,

A few days ago I managed to drop some water on the left side of my Macbook, it entered the USB / DisplayPort etc... It turned itself off immediately, I unplugged it from the charger turned it on it's left side to let the water out and it stayed like that for about 5 hours.

Later I took off the bottom cover, there was some moisture near the Battery connector but no major damage or corrosion anywhere. I cleaned everything I could and tried powering it on.

Laptop is working as it was before, the ports work but only powers on using the charger. Battery isn't detected at all, tried PRAM and SMC reset multiple times but no luck.

Battery was in good condition before showing 87% Health even after 1000 cycles. Weird thing is, the battery indicator on the side of the macbook has an led stuck on since then although the button doesn't work...

https://ibb.co/gWRcCd

https://ibb.co/c8ExCd

https://ibb.co/cBcTJJ

Some prints of coconut battery / System Info and Istat Pro which weirdly states my battery is charged

Thanks in advance

 

[robbietop]

You shorted a circuit with the water. It may have happened in the initial spill or when you left it on afterwards.

You're going to need to have a professional identify the short and decide whether it is full Motherboard replacement or just a PMC replacement.

Apple just stocked up on 2012 13" batteries, so you may want to talk to them or an Authorized Repair Shop.

If you look at the third picture, the computer knows the battery's age, as the battery sent that data in initialization. It's just a clock. But everything else is zeroed out. Zeroed out means corruption of data or hardware failure. Water plus electrical component equals hardware failure.

Without being able to check the circuits myself, my diagnostic guess is short circuit of Battery Power Management Controller caused by liquid damage.