Replaced battery draining insainly fast

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Replaced battery draining insainly fast

I just swapped the battery for the first time in my Macbook Pro Late 2013. So yeah it was time :)

I bought the battery from a third party seller since my macbook is so old. But the health of this "new" battery makes no sense. It says it was manufactured in 2011 but the number of cycles is only 8, and thoose are all done by me so it is "new" in that sense. I have followed the sugested ways when it comes to re-calibrate the new battery, I let it completely drain and then sit for more then 5 hours, then I recharged it to 100% and let it sit there over night. Any ideas whats causing this? Im thinking maybee one of the cells are dmged cause the battery remaining does jump when it gets low, but then the computer does stay on for a LONG time claiming 2% and lets say 489 mhap hours and that number does not change until it shuts down.

MacBook Pro 15″, macOS 11.2

Posted on Apr 3, 2021 12:00 PM

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Answer 1

Tesserax

Level 10

152,374 points

Apr 3, 2021 12:47 PM in response to jhgkhgfkjhgjhg

Yep, and the key is the "Full Charge Capacity." For reference, Apple considers a battery replacement is needed when that capacity drops below 80% after 1000 full recharging cycles on certain notebook models. (Note: Yours would be one of them.)

Ref: Determine battery cycle count for Mac notebooks - Apple Support

Typically with batteries, you want them to be, at least, half-charged if they are going to be stored for a considerable length of time. It just could be this one wasn't at that level, and over two years lost its ability to hold a charge as its chemical make-up broke down in that time.

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Answer 2

Apr 3, 2021 12:30 PM in response to Tesserax

Im using Battery Health 2, but the Mac OS internal battery software also says 7% and that says it will go in to sleepmode soon.

I have been on battery the entire time I have been writing theese posts, stuck at 7%. I have tried to reset the smc as well by holding down shift + ctrl + alt and the powerbutton for 10 seconds or am I doin that incorrectly?

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Answer 3

Tesserax

Level 10

152,374 points

Apr 3, 2021 12:09 PM in response to jhgkhgfkjhgjhg

Based on what you provided, it appears that this replacement battery is defective. Not sure what source you used, but I have had good luck using an outfit like OWC for replacement Mac notebook batteries. For example, I recently replaced one for my 2010 MacBook Pro.

Regardless, if this battery is not holding a charge, it doesn't matter what this battery utility app is telling you.

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Answer 4

Apr 3, 2021 12:16 PM in response to Tesserax

It seems to hold its charge just fine, but the "current max" is declining rapidly every time I discharge it below a certain ammount, so Im wondering if the software is missreading the state of the battery since the computer stays on for a long while after is "drops" to this 7% and then stays there for a long time.

It might just be a faulty battery I bought if from Ifixit like 2 years ago but havent gotten around to swap it until now, so maybee just lying around for 2 years has damaged the battery?

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Answer 5

Apr 3, 2021 12:18 PM in response to jhgkhgfkjhgjhg

Its the "health" part that has my brain rambling, it showed 8440 the first time I started the computer after I had it swapped, but then like I wrote the "current max" is dropping so rapidly when I drain the battery fully.

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Answer 6

Tesserax

Level 10

152,374 points

Apr 3, 2021 12:23 PM in response to jhgkhgfkjhgjhg

I would consider iFixIt another reliable source, so I don't think that is it. However, based on your statements, it could just be a faulty battery. I don't think it "sitting around" for a few years would be the reason.

What battery app are you using? I've had good luck with CoconutBattery for things like this. It would be interesting to see if you get different results using it.

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Answer 7

Apr 3, 2021 12:41 PM in response to Tesserax

Yeah the alt key is the option key on my swedish keyboard, the second to the left. I have the fn key and then the "option/alt" key on the bottom left side of the keyboard. I dont wanne waste your time, its prob like you said just a faulty battery.

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Answer 8

Tesserax

Level 10

152,374 points

Apr 3, 2021 12:33 PM in response to jhgkhgfkjhgjhg

It should be <shift><ctrl><option> for pre-T2-equipped Macs.

Ref: How to reset the SMC on your Mac - Apple Support

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Answer 9

Tesserax

Level 10

152,374 points

Apr 3, 2021 1:10 PM in response to jhgkhgfkjhgjhg

See if the following article answers your question:

How to Stop Your Mac from Sleeping - iGeeksBlog

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Answer 10

Apr 3, 2021 12:35 PM in response to jhgkhgfkjhgjhg

I installed the app you recommended it is says the same thing except for manufacturing date.

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Answer 11

Apr 3, 2021 1:01 PM in response to Tesserax

The annoying part is mostly that the Macbook becomes so slow and unresponsive when it thinks it about to go in to sleepmode, is there a way to disable that?

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Replaced battery draining insainly fast

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