Does this MacBook Pro have a defect battery?

[chekie]

I got this MacBook Pro 15 2018 a little less than one year ago and use it only for work.

As you can see, I rarely use the battery (24 cycles in 11 months since I got it). It has always been plugged in while being used at home and office. The health had been 98% (~7200 out of 7336) for almost a year.

A couple of weeks ago, I forgot to plug it in and used it until battery got drained and it went to sleep. Since then the battery health has been at ~95% (~6990/7336), very consistently. I tried a couple of times to use battery down to 20% and charge it back full to see if I can bring the battery health back. But it stills sits at 95%.

Is it normal that one complete battery drain permanently knocked off 3% battery health? My other MacBook Pro that I almost never use it charged got 160 cycles in less than a year and still holds >98% battery capacity.

 

[leman]

Your battery capacity is currently 7% higher than the official advertised one. To put it simple: your battery performs better than what is expected from a new one. I really wouldn’t complain if I were in your position.

As to your main question: yes, batteries will deteriorate with time and there is nothing g you can do about it. Your battery’s performance is excellent, all things considered.

 

[avz]

I got this MacBook Pro 15 2018 a little less than one year ago and use it only for work.

As you can see, I rarely use the battery (24 cycles in 11 months since I got it). It has always been plugged in while being used at home and office. The health had been 98% (~7200 out of 7336) for almost a year.

A couple of weeks ago, I forgot to plug it in and used it until battery got drained and it went to sleep. Since then the battery health has been at ~95% (~6990/7336), very consistently. I tried a couple of times to use battery down to 20% and charge it back full to see if I can bring the battery health back. But it stills sits at 95%.

Is it normal that one complete battery drain permanently knocked off 3% battery health? My other MacBook Pro that I almost never use it charged got 160 cycles in less than a year and still holds >98% battery capacity.

It is normal. Keep in mind that the battery is like muscles, so "not using it" is the worst strategy to ensure its longevity. Looks like you just learned your lesson by loosing 3% of its capacity.

 

[chekie]

Your battery capacity is currently 7% higher than the official advertised one. To put it simple: your battery performs better than what is expected from a new one. I really wouldn’t complain if I were in your position.

As to your main question: yes, batteries will deteriorate with time and there is nothing g you can do about it. Your battery’s performance is excellent, all things considered.

Thank you for your input.
I am curious why you say my battery is 7% higher than advertised one. This app reports 7336 as original max.

 

[leman]

Thank you for your input.
I am curious why you say my battery is 7% higher than advertised one. This app reports 7336 as original max.

Luck of the draw. Battery capacity fluctuates, sometimes you get a battery That exceeds the nominal spec.

 

[Fishrrman]

That battery looks fine.
Just use it.