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Victor2020

macrumors newbie
Original poster
Jun 20, 2020
3
1
Hi everyone.
I have an old Macbook pro late 2008 unibody 15inch from new and I am very happy with it.
I have just replaced the battery (Not an apple original as I can not afford one!)
The battery is charging and everything I can see looks good (orange light on only 2 cycles, Battery normal etc) I have also reset the System Manager Controller (SMC).
I have discharged the battery and charged it again.
The problem I am having is that the battery charges to about 50% and then then wont go higher.
Also after that the battery charge time keeps going up from about 4hrs up and up to 12hrs or more.
I have searched the internet and can not find any other post about the battery charging time going up!
I am including a screenshot of the battery info in the system report.
Has anyone got an idea of how to solve this as it does not seem to be a fault with the battery that I can see.
Thank You all and Stay Safe
Victor
 

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If this is a new battery...I would suspect it. There are lots of low-cost, low-quality batteries out there. Too often with batteries we get what we pay for.

It is the battery, the charger, or a small chance there is something going on with the DC-in Board. If you just put in the battery, odds are that is the issue.
 
Hi H
Have you looked at the jpeg I added to see if everything there looks correct?
Do you know from your tech knowledge if all the settings are correct.
I am still puzzled that nobody else here has had a problem like this with a non apple battery and the problems I have encountered.
I do understand that it is probably A : the battery B : the charger although I doubt that as I have 2 chargers and it is the same with both.
Or the DC-in Board, the link you sent me is for how to repair this part but not if there is any test you can do to see if that part is faulty?
First I would like to see if the problem is the battery so I am hoping someone here or yourself have any other tests I can do to find out if the problem is the battery and as I said I thought if the battery was faulty something would show up on my battery info jpeg
Thanks Victor
 
Here is the procedure that I used to calibrate my new battery that I bought from Amazon that wasn't an original Apple one. After the calibration, everything works.


If your battery is unable to be re-calibrated, then it is the battery's fault. There are many cheap knock-off batteries that are being sold as Apple replacements. Most of them don't work too well or at all giving you 50% capacity. Very few that does work like an original, but they are priced about 20% less than an original battery which mine happened to be for my MBP 2009 17".
 
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Agreed about calibration. If it does not solve the issue, and if run time is not accurate (or very close), it would reinforce the notion the battery is at fault.

I have never seen this issue specifically first hand...likely because I have never used low-cost batteries. Always been OEM or NewerTech. I'm sure there are other good third party brands too.

Besides the actual cell quality and capacity, there is a board that is essential to function and monitoring. I have always wondered if low-end batteries have a high quality/reliable control board. I don't know...just skeptical. It does seem like generally, with batteries, there is a close relationship between cost and quality. I have seen many reports of cheap batteries functioning well, but only lasting a very short life....less than half of an OEM quality battery.

As for testing, I don't know of a procedure. Apple generally does not publish testing specs; they have a flow chart of what to replace to resolve an issue...At least this was the case when I was working at an Apple certified service center.

In this case it would likely be:

1. Replace charger
2. Replace battery
3. Replace DC-in board
4. Replace logic board

It's good you have two chargers, and have ruled that out. If the battery is warrantied, I would be trying to arrange a return/replacement.
 
Hi all
I have come to the conclusion that it must be the battery for now so I am sending that back.
I don't know yet if they will refund me or replace the battery but thanks for all the help here and I will post as soon as I have resolved the issue.
Again thank you both and Stay Safe
Cheers Victor
 
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My $0.02... it's the battery.

I had the same model and none of the aftermarket batteries were worth a darn. Had three batteries I cycled through to keep the machine going. A couple of them showed manufacturing date on them in the system info: manufactured years before.

Since the machine is an antique, doubt you will find anyone that is making/selling new batteries. Just going to keep seeing stale batteries that have been on the shelf for years.

EDIT: nevermind. See OP posted while composing.
 
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