New macbook pro battery capacity 97%, normal?
- Thread starter t4tintin
- Start date
ElDiabloConCaca
U.S.D.A. Prime
Also be aware that Apple laptops won't charge to 100% if they already contain a mostly-full battery.
If you discharge your battery down to 96% then plug it in, chances are that the laptop will NOT commence charging the battery. You must discharge the battery past a certain threshold in order to get it to charge... I believe this threshold is 95%, but I'm not certain.
I would run a test: discharge the battery down to, say, 30% remaining, then put it to sleep and plug it in and let it charge all the way up. I'd be willing to bet your menubar reads "100% charge" after that.
Just as an aside, my brand-new MacBook Air's stated capacity is 4680mAh, but it's current maximum capacity is only 4515mAh through a lowly 6 charge cycles. You'll never get EXACTLY the stated capacity, as batteries are just not that exact. My older MacBook polycarbonate's battery actually held MORE charge than what it was stated to hold by about 100mAh or so for quite some time.
If you discharge your battery down to 96% then plug it in, chances are that the laptop will NOT commence charging the battery. You must discharge the battery past a certain threshold in order to get it to charge... I believe this threshold is 95%, but I'm not certain.
I would run a test: discharge the battery down to, say, 30% remaining, then put it to sleep and plug it in and let it charge all the way up. I'd be willing to bet your menubar reads "100% charge" after that.
Just as an aside, my brand-new MacBook Air's stated capacity is 4680mAh, but it's current maximum capacity is only 4515mAh through a lowly 6 charge cycles. You'll never get EXACTLY the stated capacity, as batteries are just not that exact. My older MacBook polycarbonate's battery actually held MORE charge than what it was stated to hold by about 100mAh or so for quite some time.
It's the capacity that cannot reach 100%, the battery sometimes gets 100% charged according to the desktop icon (99% according to Coconut Battery). The capacity was 98% when I first got the computer, I discharged the battery completely and recharged it to full (I believe this is called calibration?), the capacity dropped to 97% since.
According to Coconut, the max battery hold is 5770mAh, now it can only hold 5619mAh.
According to Coconut, the max battery hold is 5770mAh, now it can only hold 5619mAh.
ElDiabloConCaca
U.S.D.A. Prime
That sounds reasonably within the tolerances of battery capacity and the minor fluctuations you'll see throughout the life of the battery.
If your stated capacity goes outside, say, 10% or so of the original capacity, then THAT may be cause for concern. Or if battery capacity diminishes beyond 80% of the stated capacity within the allotted charge cycles for the computer (some are rated for 300 cycles, some for 500, some for 1,000 depending on what model of Mac).
If your stated capacity goes outside, say, 10% or so of the original capacity, then THAT may be cause for concern. Or if battery capacity diminishes beyond 80% of the stated capacity within the allotted charge cycles for the computer (some are rated for 300 cycles, some for 500, some for 1,000 depending on what model of Mac).