MBPro 16" Battery Out of the Box

[macbookfan21]

Hi,

Just got my MBPro yesterday and I notice on coconut battery that the 'full charge capacity' is quite low at ~75% out of the box. Is this an issue given that this is a brand new computer? Attached an image below.

 

[jerryk]

Give the system some time and let it go through indexing and a few charge cycles. It will probably climb into the 90s.

I also suggest not being obsessive about this number. It bounces around. Enjoy your new computer!!

 

[macbookfan21]

Give the system some time and let it go through indexing and a few charge cycles. It will probably climb into the 90s.

I also suggest not being obsessive about this number. It bounces around. Enjoy your new computer!!

Thanks! I'm pretty sure its done indexing by now since its been over 24 hours. Am I looking at it right in that the full charge capacity should be in the 90s and not the design capacity? Why is it so low out of the box, it only seems to be going down?

 

[topcat001]

Your battery heath is 98.8%. You should be looking at the second graph.

The first bar graph = current charge / maximum charge = charge %.
The second one = maximum charge / designed maximum charge = health.

 

[macbookfan21]

Your battery heath is 98.8%. You should be looking at the second graph.

The first bar graph = current charge / maximum charge = charge %.
The second one = maximum charge / designed maximum charge = health.

Ah I see! No wonder! That makes more sense now. When I do the calculation for that first bar graph though it doesn't seem to come out right. I'm at 76% battery right now, dividing by 99.1% which is the design capacity, I am getting 76.6, while the first bar graph shows 72.1. Any ideas?

 

[jerryk]

Ah I see! No wonder! That makes more sense now. When I do the calculation for that first bar graph though it doesn't seem to come out right. I'm at 76% battery right now, dividing by 99.1% which is the design capacity, I am getting 76.6, while the first bar graph shows 72.1. Any ideas?

If I understand you correctly you are dividing percentages. That does not seem right.

 

[macbookfan21]

If I understand you correctly you are dividing percentages. That does not seem right.

My current charge is 74%
Second Bar/Design Capacity is 99% right now

74/99=74.7%

The first bar (full charge capacity) shows 70.1%

 

[topcat001]

The percentages displayed by the two bar graphs are calculated as follows, taking the screenshot you posted as reference:

First one = Current charge / Full charge capacity = 6641 / 8684 * 100 = 76.5%
Second one = Full charge capacity / Design capacity = 8684 / 8790 * 100 = 98.8%

Hope this makes it clear. The graphs should be labelled charge % and health by CoconutBattery. They don't correspond to any single mAh number, rather to the ratios of the mAh numbers as explained in the above formulae.

 

[Fred Zed]

There’s already a massive thread on this subject.

 

[macbookfan21]

The percentages displayed by the two bar graphs are calculated as follows, taking the screenshot you posted as reference:

First one = Current charge / Full charge capacity = 6641 / 8684 * 100 = 76.5%
Second one = Full charge capacity / Design capacity = 8684 / 8790 * 100 = 98.8%

Hope this makes it clear. The graphs should be labelled charge % and health by CoconutBattery. They don't correspond to any single mAh number, rather to the ratios of the mAh numbers as explained in the above formulae.

Thank you so much!