Battery problem with Macbook

[JE38]

Hi Macrumors

I just godt a mac, and switched from windows!
I bought mine used, but the seller said there was nothing wrong with it.
He also said the battery was changed to a new one, before he sold it to me.

Here are a some specs:
15", primo 2011
16 GB 1333 MHz (to PS and After Effects)
Processor: Intel Core i7 @ 2 GHz (without turbo)
180 GB SSD
Systemversion: OS X 10.8.3 (12D78)
Kernel-version: Darwin 12.3.0

My battery and Kernel_Task is messing up! The battery sometimes work, and say it's in okay condition, but mostly the indicator flashes 5 times, there's a black X on the battery icon, and it says it needs service.

Battery specs:

Model specs:
Serialnumber: ***
Component-name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware-version: 406
Hardwarerevision: 2
Cellrevision: 158

Capacity left (mAh): 0
Fully charged: No
Charger: No
capacity (mAh): 0
cycles: 0
Battery installed: No
Amperage (mA): 0
Volts (mV): 0

Energiindstillinger til system:

AC-strømforsyning:
Interval for vågeblus for system (minutter): 10
Interval for vågeblus for disk (minutter): 10
Interval for vågeblus for skærm (minutter): 10
Afbryd vågeblus ved ændret spændingskilde: Nej
Afbryd vågeblus, når skærmen slås op: Ja
Afbryd vågeblus via LAN: Ja
Aktuel strømkilde: Ja
Vågeblus dæmper lysstyrken: Ja
GPUSwitch: 2
PrioritizeNetworkReachabilityOverSleep: 0
Standby Delay: 4200
Standby Enabled: 0
Batteri:
Interval for vågeblus for system (minutter): 10
Interval for vågeblus for disk (minutter): 10
Interval for vågeblus for screen (minutter): 2
Afbryd vågeblus ved ændret spændingskilde: Nej
Afbryd vågeblus, når skærmen slås op: Ja
Vågeblus dæmper lysstyrken: Ja
GPUSwitch: 2
Formindsk lysstyrke: Ja
Standby Delay: 4200
Standby Enabled: 0

It's weird.. it's like it can't detect there's a battery. However, sometimes it does!

Battery Specs:

Modelspecs:
Serialnumber: ***
Producent: SMP
Component Name: bq20z451
Pack Lot Code: 0
PCB Lot Code: 0
Firmware-version: 406
Hardwarerevision: 2
Cellerevision: 158

Capacity left: 6589
Fully charged: No
Charging: Yes
Full capacity: 7120

Cycles: 3
State/condition: Normal
Battery installed: Yes
Amperage: 1280
Volts: 12539

The kernel_task process also sometimes slows the computer, and getting up to 600% CPU-usage... i THINK it's related to the battery problem.
Also when it's detecting a battery, I can pull the charger out.

I've tried these:
Reset PRAM
Reset SMC
Turning on and off a lot of times

I'm running out of ideas! HELP!

Regards,
Jonathan

 

[justperry]

Run Apple Hardware Test and see if you get any errors.

Do so by holding the D key at startup.

 

[jeepman69]

Based on the Cycle Count, it appears probable it is a new battery. It also means the new battery did not fix the Battery Not Recognized "Black X" you describe, and the next step is to replace the logic board (seems to be a blanket recommendation). I suspect the person who sold it to you didn't want to pay the high amount of money charged to replace the logic board.

I have a similar thread, and it was recommended I contact the person who sold it to me, but that is not a feasible option for me. What about your case? Did you pay a lot less for this Macbook, or a "typical" price?

 

[JE38]

@justperry

I tried AHT, but pressing D just got me to a grey screen for a minute, then it showed up the Apple logo, and logged in normally.

Option + D, got me on the online AHT which worked except for my ISP seems to be blocking the specific ports... So I got an error.

@jeepman69
I paid a fair price for it. Also, when I was at his home and doing the payment over online banking, the computer went smooth as well.

 

[JE38]

OK so i finally succeded running the hardware test.
I get this error:

"4HDD/11/40000000:SATA(0,0)"

To me it looks like a problem with the harddisk, but it's a completely new SSD? And how can that mess the battery up?