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94% battery after 8 months?
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Yep, I stay plugged in most of the time with my Thunderbolt display at home and my ACD at work
66 cycles for me, almost 8 months old as well (mid 2011 base 13") with 92% health according to iStat widget.
Completely discharging and recharging should help but I haven't done that in a good while.
Completely discharging and recharging should help but I haven't done that in a good while.
Wow, how is that possible? I got like 97 % battery health after the first week. But is it bad for the battery to let it stay on charge constantly when using an external monitor? Cause I never let it stay on charge if I don't have to, because of the fear to mess up the battery.
The battery calculator is not 100% accurate; it can fluctuate. Its just an approximation.
Sonds like you use my battery the same way that I do, I was lower than you just 2-3 months after purchase.
Yeah it's normal. It will go up and down every now and then.
So far on my laptop:
That being said, I don't think I've ever calibrated my laptop.
So far on my laptop:
That being said, I don't think I've ever calibrated my laptop.
One discharge per month seems to be recommended. Calibration is not really necessary at all, it doesn't improve battery life, it just makes the percentage display more accurate.
The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries in older Apple notebooks.
It is perfectly normal if your battery health (maximum capacity) is more or less than 100%, even when brand 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/charging questions:
since I posted that message my capacity is somehow back up to 92%!
it had been down in the 85% region for a few days and I was afraid it wasn't going to come back. I got a new 85W charger and have been using it for a day or two now. Seems like its coming back to full health almost.... strange.
it had been down in the 85% region for a few days and I was afraid it wasn't going to come back. I got a new 85W charger and have been using it for a day or two now. Seems like its coming back to full health almost.... strange.
Apple replaced the battery on my 2010 11" FOC a couple of weeks ago.
It was down to 70% after 474 cycles in 18 months, so a fair bit below their expectation of 80% at 1,000 cycles.
tut
It was down to 70% after 474 cycles in 18 months, so a fair bit below their expectation of 80% at 1,000 cycles.
tut
My whitebook with a removable battery is at 41 months old with 154 cycles and 95% health = I calibrate it once a month...
I also was considering a Sandy Bridge 13" air but noticed that even the 13" didn't seem to get that much better battery life than my whitebook so I think I've decided to return it considering the battery in the MBA is ~+1500 mAmp hrs better a battery and I still get 5+ hours on my whitebook unplugged with light wireless/wired use of email and open office...
I also was considering a Sandy Bridge 13" air but noticed that even the 13" didn't seem to get that much better battery life than my whitebook so I think I've decided to return it considering the battery in the MBA is ~+1500 mAmp hrs better a battery and I still get 5+ hours on my whitebook unplugged with light wireless/wired use of email and open office...
Damn, 154 cycles in 41 months! Is that because you rarely use it, or it's mostly on AC