Battery issues

[Remco Piet]

Hi!

I know there multiple subjects about battery life and such. But nobody seems to have the issue I am having... I hope someone is able to help me out here.

I am having a MacBook Pro mid 2015. Last year my battery turned out to be in a rather poor condition so I decided to replace it. I got a brand new one and installed it myself. After only 30 cylces or so Coconut showed allready less than 80% of its design capacity. When reaching about 50% charge, it dropped down to 7% in seconds, it keeps it at 7% for a while before dropping to 0%. I filed a complained to the company I bought the battery from and I got a new one. Again, the same issue. It is now showing 34 cycles with only 62.8% of its design capacity en its status is "check battery". I am about to get a new battery again, but somehow something else seems to be wrong here. The company says they have never seen this and thinks it is probably some sort of wear of the laptop itself.

Any suggestions??

Remco

 

[Audit13]

After installing the new battery, did you calibrate and perform an SMC reset?

 

[Remco Piet]

I did calibrate it by depleting it to 0% and charge it to 100% again. No SMC reset done. But I can't imagine that would be such an issue.

 

[Audit13]

Reset the SMC of your Mac - Apple Support (CA)

The SMC manages power and hardware behavior on your Mac. This troubleshooting article explains when you should reset it, what issues it can fix, and how to perform an SMC reset depending on your Mac model (Apple Silicon, Intel with T2 chip, or older Macs)

support.apple.com

 

[Fishrrman]

Take it to an Apple Store and have them put a factory-original battery in it...

 

[Ruggy]

As has been said, best thing is to go to the Apple store or a registered repairer and have a factory original battery.
Most likely, the company isn't selling you new batteries- but it's impossible to know from here of course.

But buying batteries is a major headache particularly for phones where you see exactly the problem you describe with phones quite often.

There are hundreds of millions of batteries being used and millions being replaced every year- mostly in phones. The old batteries look brand new and sometimes, they aren't even in bad condition.

So there's a huge number of people selling genuine batteries- which they are- but which have been taken out of old equipment. If you get one that doesn't work, sure they'll send you another one and maybe eventually you'll get one that's ok.
But as far as I know, Apple don't sell brand new original batteries and they are very very careful about who gets them. They have a list of registered repairers, they do it themselves and that's about it.

So by far the most likely thing here is that you are dealing with someone that's selling genuine but old batteries that have been taken from machines going for recycling or have been sent to be recycled.
You can check it out, loads and loads of stories about this with phones- Android mostly of course.