Macbook Air (mid 2012, 13") charging very slow after update to Yosemite

Hi ..

Have you tried a different wall outlet?

An SMC reset might help > Intel-based Macs: Resetting the System Management Controller (SMC)

I am having the same issue... I'm running a MBP 15" late 2011 and made a fresh Yosemite install on a brand new 1TB Samsung SSD.

Charging extremely slow, if charging at all. When running Netflix it always drains battery percentage when connected to the power outlet. Now even with regular browsing in Chrome it is draining.

Displaying weired loading numbers. 20 minutes until full load, etc.

Apps using significant energy is always Chrome... but really.. never had this issue before, without Yosemite. I turned of the opacity effect on the main bar, turned off the keyboard light and running on low screen light and still draining. there's no way to open more than 3 or 4 browser windows and this is extremely bad when developing for the web.

Can anyone help?! Already did the reset as well, but didn't help. Staying for most of the time around 1 to 5 percent battery life, while connected to the wall plug. Below 3 percent everything starts to lag. Feels like the ram is taken to the fullest and no movement of cursor and mouse a.k.a. typical windows behavior 😉

my hard drive had a complete crash just a few days after submitting my previous reply, requiring a new replacement drive.

I don't know if it was related, but my computer is under a year old, and problems with stalling and heating began appearing immediately after updating to Yosemite.

However, since replacing the drive, and running Yosemite on the new drive, my computer now charges extremely quickly.

I have a 13" mid-2012, and I've had the same issues. Originally I thought it was my charger/magsafe which wasn't connecting properly as a different charger seemed to work fine (showing the green light on the end of the cable connect to the computer). What I've noticed though is that if I press and wiggle the magsafe connector until the green light comes on, the battery icon goes from white to black, and when I let go of the charger everything is fine. The other thing, when I connect my cable, the screen becomes brighter (as per my energy settings). To me this should mean that the computer realizes it's connected, but the system doesn't acknowledge it for some reason. Tried resetting the SMC, but that didn't accomplish anything. Would love a fix to this.

Same problem here. There are several times when my 2 month old MacBook Air not charged normally.

The lamp on the charger is not lighting (not orange or green) but the battery icon shows it is charging. In this case it is super slow.

After reboot the system work properly but after some time it comes again.

The problem came after Yosemite refresh!

Yes same happens to me, it charged now to 63% and got stuck. It took 7hrs to get to 63%. Apple should stop releasing pre mature software. Updated my iPhone 5 to 8.1 and the phone has touch sensitivity issues now. To much time spent on trouble shooting their mistakes. Yosemite or iOS8 are beta versions rather then stable releases. But who cares if I vent here no one at apple support gives a sh@#$ anyways.

Grrrrr

I have a early 2014 macbook air and I have had the exact same problems that everyone has listed here... First i talked to online support and they had me go in and get a replacement charger which didn't help. Tried SMC reset and PRAM reset, and nothing. Went through a lot of steps and have been and out of the apple store with no success. I went into the apple store and tried to get help and they told me nothing was physically wrong with the computer. They had me erase the entire hard drive and reinstall everything from scratch. The problem still persisted. Finally i got mad and said screw it and erased everything and loaded from the internet recovery which to my surprised loaded the original mavericks os. Did the firmware updates and viola fixed, lasted a few days with no issues and felt like i had a brand new machine... but then i foolishly reinstalled yosemite thinking this time would be different and the problem came back again almost immediately... been charging for 7 hours and moved 15% but it still says 20 hours to charge. it has to be the Yosemite OS!

(Which really ***** cuz i really liked the new feel and look of the OS)

My plan now is to repeat the same process but can anyone on here point me in the right direction from here now? i Have my Time Machine backed up in yosemite with all my data but mavericks won't let me migrate it all back. It says that its a different operating system and it isn't compatible... How can i transition my TM data to the old OS?

The Apple Hardware Test does not inspect the DC IN module that brings the energy from the magsafe connection, through to the computer/battery.

If you had a crazy power failure or like me charged your computer consistently using a modified sine wave inverter (I live off grid on solar, but also vehicle adapters), the little DC IN chip can get tiered or fried. The cost of the part is like $26 USD.

How to check.

1. Plug in Magsafe

2. Let charge for some time

3. Feel the casing around the magsafe. If it is much warmer than the surrounding casing, then the DC is probably failing.

Hi everyone,

I'll share my experience as well!

I, too, had the same issue, my battery is just a few months old and it took ages to recharge (10-15 hours).

I brought my computer in for service last week and they found that in my case there was a fault in the charging circuit, on the logic board. So they replaced - for free of course - the logic board! 🙂
Maria

I just replaced my battery and have had this issue. I don't think it's the charging circuit necessarily since at times the battery will charge in just a couple hours.

Oddly enough the last time it charged quickly, the charging light on the power adapter was green the entire time. Now it's orange and is back to slowly charging.

Problem started this year, using Yosemite.

My Mid 2012 MacBook Air 13' has a similar problem. When plugged in it charges really slowly. When I watch a video the battery even discharges. I have tried SMC resetting and have updated to El Capitan now.

I have used the Power Adapter of my friend - and it worked. Battery charges normally with the other Power Adapter. Seems I need to buy a new one (at 90$)

I had exactly the same problem, with mid 2012 13" Air. Took three days to charge to 82%, and sometimes battery was shown with an X on it. When X was shown disconnecting the power supply would instantly go to black screen. But oddly enough reconnecting would cause the state to be restored to where it was before it went black.

FIXED:

Today I opened the back, and was going to swap the Power PCB (Has Mag connector one it. top right when upside down and keyboard towards you) from another working machine to see I could prove it was this at fault, and thus could order a new one. So I disconnected the 5cm ribbon jumper connector between the main PCB and the smaller power PCB, it can easily be prised off with a screw driver, or finger nail, but gently. I did also notice the keyboard connector looked as if it was not quite in, well I presume it was a keyboard connector, but may be wrong. It was mid-way up and slight to the left of canter. I pushed, and wiggle a few other connectors, on the power PCB, and decided not to change over the power PCB, so reconnected the jumper I had previously removed.

Screwed the back, back on and all appears to works fine now!

So what part of that procedure fixed it I don’t know… It could be removing the jumper reset something. But may be of help to someone else.