Battery Not Charging after 10.6.8 Update (Macbook Pro 13' i5 2011)

[denyspro]

Hi,

I own a 4 months old Macbook Pro 13in with i5 processor. I was using it normally until yesterday, when a software update prompting for enhancements on thunderbolt drivers and some stuff regarding OS X Lion was displayed. I started the software update, let the macbook plugged in and went to sleep.

Today I found out that my battery is not charging anymore (when plugged in, the magsafe led lights green and the energy saver displays Not Charging). I've already tried to restart SMC to no result(unplugged, waited for 15 sec, plugged again and after 5 sec turned it on).

Basically, my macbook is now useless. I use it mainly in the college, cant have it always plugged in and my second half classes start tomorrow!

I dont have a time machine backup.

I dont want to open the macbook since its still under warranty. What should I do?

The system profiler info can be found below:

Hardware Overview:
Model Name: MacBook Pro
Model Identifier: MacBookPro8,1
Processor Name: Intel Core i5
Processor Speed: 2.3 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 3 MB
Memory: 4 GB
Boot ROM Version: MBP81.0047.B0E
SMC Version (system): 1.68f96
Serial Number (system): C02FFNFLDH2G
Hardware UUID: 5C7658AB-7D4A-5731-A54F-8FC8ABCDA88C
Sudden Motion Sensor:
State: Enabled

Power On Self-Test:
Last Run: 7/31/11 3:01 PM
Result: Passed

Battery Information:
Model Information:
Serial Number: W010858B9D3BA
Manufacturer: SMP
Device Name: bq20z451
Pack Lot Code: 0000
PCB Lot Code: 0000
Firmware Version: 0201
Hardware Revision: 000a
Cell Revision: 0158
Charge Information:
Charge Remaining (mAh): 131
Fully Charged: No
Charging: No
Full Charge Capacity (mAh): 5542
Health Information:
Cycle Count: 33
Condition: Normal
Battery Installed: Yes
Amperage (mA): 0
Voltage (mV): 10987

System Power Settings:
AC Power:
System Sleep Timer (Minutes): 0
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 30
Wake on AC Change: No
Wake on Clamshell Open: Yes
Wake on LAN: Yes
Current Power Source: Yes
Display Sleep Uses Dim: Yes
Battery Power:
System Sleep Timer (Minutes): 30
Disk Sleep Timer (Minutes): 10
Display Sleep Timer (Minutes): 15
Wake on AC Change: No
Wake on Clamshell Open: Yes
Display Sleep Uses Dim: Yes
Reduce Brightness: Yes

Hardware Configuration:
UPS Installed: No

AC Charger Information:
Connected: Yes
ID: 0x0100
Wattage (W): 60
Revision: 0x0000
Family: 0x00ba
Serial Number: 0x00130284
Charging: No

 

[Inopia-Vi]

I got the same issue while the battery is at 96%, turns green an wont charge past that...

Try shutting the MBP down and then plug-it in...

 

[denyspro]

I got the same issue while the battery is at 96%, turns green an wont charge past that...

Try shutting the MBP down and then plug-it in...

I have tried. I also tried using the whole battery and then plugging it back.

Now I'm trying to apply the update again. If it doesn't work, I'm going to take it to apple care.

I wonder how much time is going to take in order to solve it...

 

[Kyzelios]

When you reset the System Management Controller (SMC), did you just unplug the computer, wait for a short period, and plug it back in? If so, that won't reset anything.

The proper procedure for resetting the System Management Controller (SMC) in your MacBook Pro:

1. Shut down the computer.
2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
4. Release all the keys and the power button at the same time.
5. Press the power button to turn on the computer.

For more information on how to reset the System Management Controller in your MacBook Pro, please see http://support.apple.com/kb/ht3964.

 

[Kyzelios]

I got the same issue while the battery is at 96%, turns green an wont charge past that...

Try shutting the MBP down and then plug-it in...

Try running your MacBook Pro on battery until it reaches around 85%, then plug it back in. It should then charge itself back up to 100%.

The reason that you are seeing this behaviour is because there is a threshold (which I believe is 95%) for when the battery will recharge itself to prevent un-necessary wear and tear.

The available percentage will slowly drop over time (from 100%) if you leave the computer plugged in all the time as the computer can draw from the battery if it needs to.

Hope that helps explain things a bit!

 

[Inopia-Vi]

Yeah, a 95% threshold make sense..
Was it introduced with Lion, make me winder since this is the first time it happened to me too

 

[denyspro]

Try running your MacBook Pro on battery until it reaches around 85%, then plug it back in. It should then charge itself back up to 100%.

The reason that you are seeing this behaviour is because there is a threshold (which I believe is 95%) for when the battery will recharge itself to prevent un-necessary wear and tear.

The available percentage will slowly drop over time (from 100%) if you leave the computer plugged in all the time as the computer can draw from the battery if it needs to.

Hope that helps explain things a bit!

That doesn't seem to be my problem. I drained the whole thing and still no charge. I called Apple Care and they said I shouldn't take to the store right away because if it's not a hardware issue, they will charge me.

So tomorrow I'm going to take it to my job (they only answer from 9am to 6pm) and try to troubleshoot by phone on lunch time. I will keep you guys posted...