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

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Why is my 2011 MacBook Battery dying so quickly?

I ordered a new battery from ifixit for my early 2011 13 inch MacBook Pro, it has been dying within 2-3 hours of use and I am wondering why.

Update (05/19/24)

I can't seem to put a screenshot in here, but this is what it says, charge percent is 56% and current charge is 3199 mAh full charge capacity is 5728 mAh design capacity is 6000 mAh has 6 cycle counts battery status good manufactured at 2024-03-09 temp 28.4 Celsius, discharging with 3.08 watts.

Update (05/19/24)

heres the screenshot

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Update (05/21/24)

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Update (05/22/24)

Here is the screenshot at 100% charge

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Answer this question I have this problem too

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@jude85858 - It looks like the battery just hasn’t gotten enough time to charge fully. Did you calibrate it follow the procedure outlined?

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I calibrated it by following the card that came with the battery. Charge to 100% and wait 2 hours and then use until it dies and then wait 5 hours and charge it to 100% again.

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@jude85858 - let it charge over night and check things again.

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I charged it overnight and it is still dropping percentage pretty fast

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@jude85858 - Can you post a snapshot of CoconutBattery so we can see things

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Please install this gem of an App CoconutBattery is will allow you to see what’s happening and post a snapshot of the main window here so we can see as well. Then we can guide you to the next action.

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Sorry I am taking so long to respond, I have been busy and will tell you what is happening with the battery sometime this weekend.

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It almost sounds like the battery you got from iFixit is bad. Do you still have to original battery? Could you pop it back in and see what happens?

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I do have the original battery, I will put it back in and tell you what happens.

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just put the old battery back in, on coconut battery status says check battery has 830 cycles but the computer still works. It is losing charge around the same rate as the new one. it is at 13% and activity monitor says it will die in 12 minutes.

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Also it says discharging with 23 watts, a minute ago it said 30 watts. The newer battery was reading around discharging with 8-10 watts. I don't know if this means anything but its something I noticed.

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Nevermind I think that is normal

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@jude85858 - Okay, your original battery is draining at the same rate as the replacement. Here's the action to take:

Quit any apps that you are not using and let the battery drain slowly. Set the screen to never sleep in the energy saver pane in System Settings (System Preferences), and disable the screen saver. Once it drains, then vigorously calibrate it (that's just what I call it). Charge it to 100% WITHOUT ANY PROGRAMS RUNNING, and leave it plugged in for 2 hours. Then, try playing 4K / HDR / 60 FPS videos. You can find these on YouTube without too many problems. Play this until your Mac shuts down. Do not let the videos stop playing. (To make this process even more accurate, try running many applications at the same time. Open Photo Booth to operate the camera. Keep the Activity Monitor update frequency at very often. This will drain the battery very quickly. Then, leave it drained overnight, and charge it to 100% WITHOUT INTERRUPTION.

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When I calibrate a battery as mentioned above, I also delete the 3 files found in HDD library Preferences .com.apple.power*, empty the bin, then restart, these files will then be written fresh in case they are confusing something.... seems to help especially to reset the service recommended notice ;) hope that helps.

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thank you I will try this and tell you if it does anything.

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@jude85858 Have it charged up as much as possible before doing it :)

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@jude85858 & @livfe - Just so you guys know, com.apple.power files are so macOS understands battery information, power adapter information, etc. I wouldn't think that these files could be draining the battery, but it definitely is possible! I would recommended that you have a backup of these files before removing them, or else your Mac may crash at sleep, have an X on the battery in the menu bar, etc. Also, macOS will not like it if you are messing with the system files, so you'll probably have to turn off System Integrity Protection before you proceed. If something goes horribly wrong, it may cause you to reinstall macOS. Good luck!

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@jadonlyon No need to disable the system integrity, they just fly to the bin!

On a reboot they appear to be freshly created by the system, I never had a problem doing it so far and it did seem to correct some 75% of SR's on batteries. So a new battery and these 'new files' I would think help the system to have only the info regarding the new battery in case they did carry over any previous info from an old battery. Worth a try at least.

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@livfe - Definitely worth a try! You are absolutely right!

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Jude will be eternally grateful.
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