Hello everyone!
Introduction
So, I bought this second hand Macbook Pro (Late 2011) in March 2015, everything's been great so far, nothing to say. I have two original Apple power adapters, both of them are 85W, they must have the same age: bought around 2012.
Around April 2015 (this april), the Magsafe plug of one of the power adapters fell into a cup of coffee. I took the time to clean it up "dry" a few times, and to leave it a bit alone. A few days later, i could use it normally, and nothing felt different, it worked great. No overheating, nothing. This accident didn't cause me any problem so far.
Yesterday i had to travel somewhere, so i chose to leave one power adapter home, and to pick the other one to accompany me (I can't tell which one is which, that's why i don't know if the coffee fact is relevant or not).
I spent yesterday afternoon and night perfectly, i could even work until 6am without anything unusual happening. Charge and uncharge were normal.
The problem
Digital drawing is a hobby of mine, and i recently picked back up a live streaming channel. I'm using a software to stream my desktop towards a website, and it also records it to my hard drive in the meantime. As you might know, live streaming your desktop can be a very consuming task for the computer: first time i hear this Macbook Pro heat and activate his fans so suddenly, as soon as the software is running. And his battery life feels suddenly quite shorter.
This afternoon, as i was streaming, the Mac asked to power the battery up; so i plugged the Magsafe and kept working. I didn't notice directly, but after a few minutes, the Magsafe light turned back to green, and charge was suspended at 9%. I tried to unplug and replug a few times (sometimes even a Magsafe isn't perfectly connected), nothing changed. Finally, it got to work. Worried, i launched my Coconutbattery, and i realized the battery was barely charging, at a charging power varying between 1W and 11W (around 6hours remained to complete full charge!!?). I decided the quit my streaming, and got it to charge in calm: 3 hours remaining to full charge (i can't remember the charging rate in W). I did a few other things, and i let it breathe. My battery was charged by 40% when i decided to pick up my stream. A few moments later: charge is stuck at 45%, Magsafe light becomes unstable again, suddenly green then picking up orange, low charging rate, etc.
I quit the live stream. I unplugged my power adapter. My 40% / 30min of battery life quickly transformed in 1hour30mins as the computer calmed down: my battery seemed to be functioning normally (no charge dropdown).
The question
We're tonight. My battery life went low, Mac asked for power source, I plugged the adapter. It'll be soon charged now, no overheating, no unstable Magsafe light. Here's my current CoconutBattery record:
What i've been previously calling "charging power" or "charging rate", what was low varying between 1 and 11W is now at 36.6Watts (2nd line from the bottom).
It never went above 45Watts as i often checked, and when i first plugged the power adapter, Mac was announcing 2hours30 of charge remaining until full capacity. Normal estimation.
As i'm using a 85W power adapter, why is this charging power stuck around 40Watts? Anyone can explain how this works to me? (i tried googling it, no luck).
Is there something wrong about my adapter? Should i keep using it?
Could it be that the stream was consuming so much instant energy from the power adapter that my battery was unable to be "fed" power too? Even leading to no battery charging at ALL and so the Magsafe turned green?
Thanks for reading! I hope you guys can help me enlighten this matter to me.
This was long, i'm sorry. But sometimes EVERY detail is important with computing. Everything can be interpreted a thousand times differently, and problems can have no relations or sometimes everything is related.
Paul
Introduction
So, I bought this second hand Macbook Pro (Late 2011) in March 2015, everything's been great so far, nothing to say. I have two original Apple power adapters, both of them are 85W, they must have the same age: bought around 2012.
Around April 2015 (this april), the Magsafe plug of one of the power adapters fell into a cup of coffee. I took the time to clean it up "dry" a few times, and to leave it a bit alone. A few days later, i could use it normally, and nothing felt different, it worked great. No overheating, nothing. This accident didn't cause me any problem so far.
Yesterday i had to travel somewhere, so i chose to leave one power adapter home, and to pick the other one to accompany me (I can't tell which one is which, that's why i don't know if the coffee fact is relevant or not).
I spent yesterday afternoon and night perfectly, i could even work until 6am without anything unusual happening. Charge and uncharge were normal.
The problem
Digital drawing is a hobby of mine, and i recently picked back up a live streaming channel. I'm using a software to stream my desktop towards a website, and it also records it to my hard drive in the meantime. As you might know, live streaming your desktop can be a very consuming task for the computer: first time i hear this Macbook Pro heat and activate his fans so suddenly, as soon as the software is running. And his battery life feels suddenly quite shorter.
This afternoon, as i was streaming, the Mac asked to power the battery up; so i plugged the Magsafe and kept working. I didn't notice directly, but after a few minutes, the Magsafe light turned back to green, and charge was suspended at 9%. I tried to unplug and replug a few times (sometimes even a Magsafe isn't perfectly connected), nothing changed. Finally, it got to work. Worried, i launched my Coconutbattery, and i realized the battery was barely charging, at a charging power varying between 1W and 11W (around 6hours remained to complete full charge!!?). I decided the quit my streaming, and got it to charge in calm: 3 hours remaining to full charge (i can't remember the charging rate in W). I did a few other things, and i let it breathe. My battery was charged by 40% when i decided to pick up my stream. A few moments later: charge is stuck at 45%, Magsafe light becomes unstable again, suddenly green then picking up orange, low charging rate, etc.
I quit the live stream. I unplugged my power adapter. My 40% / 30min of battery life quickly transformed in 1hour30mins as the computer calmed down: my battery seemed to be functioning normally (no charge dropdown).
The question
We're tonight. My battery life went low, Mac asked for power source, I plugged the adapter. It'll be soon charged now, no overheating, no unstable Magsafe light. Here's my current CoconutBattery record:
What i've been previously calling "charging power" or "charging rate", what was low varying between 1 and 11W is now at 36.6Watts (2nd line from the bottom).
It never went above 45Watts as i often checked, and when i first plugged the power adapter, Mac was announcing 2hours30 of charge remaining until full capacity. Normal estimation.
As i'm using a 85W power adapter, why is this charging power stuck around 40Watts? Anyone can explain how this works to me? (i tried googling it, no luck).
Is there something wrong about my adapter? Should i keep using it?
Could it be that the stream was consuming so much instant energy from the power adapter that my battery was unable to be "fed" power too? Even leading to no battery charging at ALL and so the Magsafe turned green?
Thanks for reading! I hope you guys can help me enlighten this matter to me.
This was long, i'm sorry. But sometimes EVERY detail is important with computing. Everything can be interpreted a thousand times differently, and problems can have no relations or sometimes everything is related.
Paul