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Battery Problem. My MBP 'mid-2009 model' keeps dying at around 52%.

I replaced the battery a few months ago after receiving the warning 'replace battery soon' and it's been doing this ever since.


PLEASE HELP! it's beyond annoying. It must be a problem with the computer as the battery is brand new and it was doing the same thing before i replaced the battery.

MacBook Pro

Posted on Apr 18, 2014 9:44 PM

Reply
9 replies

Apr 18, 2014 11:53 PM in response to James Utah


James Utah wrote:

Yes i did. (ebay battery)

Bingo. That had to be the case.

Since the Ebay batteries have a rabid nasty 'ability' not to work.....



then the prior battery, was it a genuine Apple battery ? (which is more than just a battery, it also contains a microchip for communication the Ebay batteries do not have).



On the PRIOR battery (not this one since its an Ebay battery and theyre known to be worthless).....did you:


1. did you often drain the battery very low?


2. did you often /always have your macbook on charge,......or did you often / always BOTH have your macbook on charge AND in sleep mode?


3. did you often /always play realistic heavy graphics games ON battery on your notebook?



1 or 2 and 3 are harsh on the battery chemistry and therefore its longevity


all batteries are consumables meant to replaced either in their own "due time" or early due to abuse / misuse.

Apr 19, 2014 12:07 AM in response to James Utah

This has already been established, but you should only buy batteries directly from Apple - this is not the case with every component of your system, but when it comes to the battery, it is a must.


Now, please provide the following information:


Open Finder > Apple Logo > hold down option > System Information... > Hardware > Power


Post the output in your reply.

Apr 19, 2014 12:10 AM in response to nbar

Battery Information:


Model Information:

Serial Number: W00030C0L77ZC

Manufacturer: SMP

Device name: bq20z451

Pack Lot Code: 420a

PCB Lot Code: 0512

Firmware Version: 860f

Hardware Revision: 860f

Cell Revision: 860f

Charge Information:

Charge remaining (mAh): 3932

Fully charged: No

Charging: Yes

Full charge capacity (mAh): 4387

Health Information:

Cycle count: 48

Condition: Normal

Battery Installed: Yes

Amperage (mA): 631

Voltage (mV): 12131


System Power Settings:


AC Power:

System Sleep Timer (Minutes): 50

Disk Sleep Timer (Minutes): 0

Display Sleep Timer (Minutes): 50

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): 28

Disk Sleep Timer (Minutes): 10

Display Sleep Timer (Minutes): 28

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: 0x0085

Serial Number: 0x00652e58

Charging: Yes

Battery Problem. My MBP 'mid-2009 model' keeps dying at around 52%.

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