Battery 'Current Capacity' at 97% - new MB Air

[LastLine]

Hey all,

Just bought a new Macbook Air, and as I often do I installed my little utilities on. One of those being Cocounut Battery.

Interestingly I'm told that my battery's current capacity is 6551 mAh, and it's designed capacity is 6700 - a shortcoming of 3%. Is this something that's likely to change as I do a full charge calibration on it or is it something I should bother Applecare about? I'm a little unsure where to with that. I know it's not a big difference, but I do feel that out of the box I should get the full 100%


Thoughts?

 

[Alaerian]

It's fine and will fluctuate. Completely normal.

Don't overreact.

 

[LastLine]

It's fine and will fluctuate. Completely normal.

Don't overreact.

Yeah? So I should realistically expect to see that 'current capacity' fluctuate below where it is, and likely also at some point, up to the full design capacity? First time I've had a NEW laptop since finding Coconut battery so had a small worry

 

[Alaerian]

Yup. It will go up and down in the short run, with an overall decline in the long run.

It's fine.

 

[LastLine]

Yup. It will go up and down in the short run, with an overall decline in the long run.

It's fine.

That's much what I expected to hear.

Sometimes it's just nice to have someone confirm what you're already thinking.

 

[bp1000]

Mine reports all sorts of figures, even 93% health and it stills reports upwards of 11 hours remaining as soon as i unplug it after a full charge. In reality it lasts 6 - 7 hours when i let it drain fully... unless i start watching videos etc.

 

[GGJstudios]

Interestingly I'm told that my battery's current capacity is 6551 mAh, and it's designed capacity is 6700 - a shortcoming of 3%. Is this something that's likely to change as I do a full charge calibration on it

The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries.

It is perfectly normal if your battery health (maximum capacity) is less than 100% when new or if it fluctuates up or down over time. For further details, read the CHECKING STATUS AND HEALTH section of the following link.

This should answer most, if not all, of your battery questions:

Apple Notebook Battery FAQ​