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Early 2011 Model: A1278 / 2.3 GHz i5 or 2.7 GHz i7 processor

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Battery is not charging, green light, can't reset SMC.

1. This machine runs perfectly fine with charged battery inside (i.e. fan speeds normal and all is well). However, the battery will continue to drain as the green light on charger stays on and computer indicates not charging.

2. Machine also runs without battery (using special power-up technique), but the fan goes at full speed the entire time.

I have installed FanControl software to try and delegate fan speeds, but without battery the min-max fan speeds say 0-0 even while fan is blazing. FanControl runs properly when charged battery is in the machine.

I have disassembled the machine completely to look for any hardware issues, but everything appears fine.

I have tried SMC reset, but light does not indicate that this was successful and battery still won't charge.

Block Image

Battery Information:

Model Information:

Serial Number: 9G9440GNM8VNC

Manufacturer: DP

Device Name: bq20z451

Pack Lot Code: 0

PCB Lot Code: 0

Firmware Version: 3

Hardware Revision: 2

Cell Revision: 100

Charge Information:

Charge Remaining (mAh): 760

Fully Charged: No

Charging: No

Full Charge Capacity (mAh): 4670

Health Information:

Cycle Count: 445

Condition: Normal

Battery Installed: Yes

Amperage (mA): -1797

Voltage (mV): 10637

System Power Settings:

AC Power:

System Sleep Timer (Minutes): 10

Disk Sleep Timer (Minutes): 10

Display Sleep Timer (Minutes): 10

Wake on AC Change: No

Wake on Clamshell Open: Yes

Wake on LAN: Yes

Current Power Source: Yes

Display Sleep Uses Dim: Yes

Hibernate Mode: 3

PrioritizeNetworkReachabilityOverSleep: 0

Standby Delay: 4200

Standby Enabled: 0

Battery Power:

System Sleep Timer (Minutes): 10

Disk Sleep Timer (Minutes): 10

Display Sleep Timer (Minutes): 2

Wake on AC Change: No

Wake on Clamshell Open: Yes

Display Sleep Uses Dim: Yes

Hibernate Mode: 3

Reduce Brightness: Yes

Standby Delay: 4200

Standby Enabled: 0

Hardware Configuration:

UPS Installed: No

AC Charger Information:

Connected: Yes

ID: 0x0100

Wattage (W): 60

Revision: 0x0000

Family: 0x00ba

Serial Number: 0x00b0f2d7

Charging: No

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Can you give us the exact model of your system. Apple has quite a few different models. From the About This Mac copy the system serial number and paste it into here: EveryMac - Lookup it will show you your system. Paste the URL here for us to see as well.

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Macbook Pro 8,1 (Early 2011)

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Lets start off talking about SMCFanControl it's not something I recommend! Please take it off and lets use a better app to monitor your thermal sensors & fan's. Here is what I recommend: TG Pro unlike SMCFanControl it doesn't mess with SMART which means its more responsive and you can set a threshold to boost the fan when its needed (similar to SMCFanControl) but here it's using SMC services.

A good way to think of it here is you hurt so you take some pills but the pain doesn't go way so you continue taking the pills instead of seeing a doctor. Now if you had seen the doctor sooner you might have not needed to take the pills and you might be covering up a bigger problem that is festering! Fan control software is just like this you often are allowing a bigger problem to continue which will be a more expensive repair than it needed to be.

Apple does do a good job in its heat management design for what the system was designed to do when it was made.

Sadly, Apple didn't foresee how popular heavy graphic gaming would take off so a lot of people push their laptops too far with the older models. People are also guilty in not letting their systems breathe, as well as give then a good cleaning then they should.

OK, now on to your problem ;-}

It sounds like SMC services is messed up (power). I would start off using an app that can see whats happening with the battery & charging logic. Here's what I use: CoconutBattery. Paste a screenshot of the main screen here so we can see it.

Update (01/08/2017)

  • Have you tried a second MagSafe power adapter?
  • Have you tied a second battery?

Also did you inspect the MageSafe connector, both the charger & system are they clean is there any wear or damage present? You might want to clean the surfaces with Isopropyl alcohol and a cotton swab (Q-Tip). If the connector is damaged you could try replacing the DC-In board. Here is the IFIXIT guide: MacBook Pro 13" Unibody Early 2011 MagSafe DC-In Board Replacement

If neither altered anything I would suspect the power comparator chip is having a problem on your systems logic board. You'll need to find someone with the deeper skill set to diagnose the logic board circuitry as well as the needed parts & SMT micro-soldering skills. Or, replace the logic board.

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