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dyerucf
Feb 2, 2008, 10:10 PM
Well I have an Air on order, delivers the 15th but I am eager to cancel that order and pick one up in the store if I am able before then. I just have a battery questions. When I get my new macbook air, when ever and how ever that may be, how do I condition my battery to start to ensure the best battery performance.



gr8tfly
Feb 2, 2008, 10:27 PM
The manual for the MacBook Air doesn't have any procedure (that I can find), but here is the latest info per Apple:
http://www.apple.com/batteries/notebooks.html
http://docs.info.apple.com/article.html?artnum=86284

dyerucf
Feb 3, 2008, 01:29 AM
I remember reading somewhere there was some 'first charge' thing that would help break in the battery or something along those lines.

richard.mac
Feb 3, 2008, 02:39 AM
plug it in straight away. charge it to full charge and leave it for a couple of hours. use it unplugged until it sleeps. leave for a couple of hours. plug it back in and then charge it to full. repeat every 1-2 months. also its perfectly fine to leave it on charge for long periods of time. just remember to calibrate.

elmo151
Feb 3, 2008, 08:51 AM
plug it in straight away. charge it to full charge and leave it for a couple of hours. use it unplugged until it sleeps. leave for a couple of hours. plug it back in and then charge it to full. repeat every 1-2 months. also its perfectly fine to leave it on charge for long periods of time. just remember to calibrate.

what he said :p

NC MacGuy
Feb 3, 2008, 08:58 AM
plug it in straight away. charge it to full charge and leave it for a couple of hours. use it unplugged until it sleeps. leave for a couple of hours. plug it back in and then charge it to full. repeat every 1-2 months. also its perfectly fine to leave it on charge for long periods of time. just remember to calibrate.

Doing that even as I type... The battery was registering only 95% capacity left after 5 cycles (funny, I only did two...) Will see how the conditioning works. Apple says to turn off any app.'s, let it go into deep sleep of 5 hours or more, than plug-in and charge fully.

JML42691
Feb 3, 2008, 09:01 AM
plug it in straight away. charge it to full charge and leave it for a couple of hours. use it unplugged until it sleeps. leave for a couple of hours. plug it back in and then charge it to full. repeat every 1-2 months. also its perfectly fine to leave it on charge for long periods of time. just remember to calibrate.
The only thing that I can add is that every 2-4 weeks might be a little better than 1-2 months, just my experience in the past.

Jsn
Feb 3, 2008, 10:53 AM
...just remember to calibrate.

I'm sorry: I don't understand "calibrate" in this context. Could you fill me in? Thanks. :o

aiongiant
Feb 5, 2008, 09:49 PM
plug it in straight away. charge it to full charge and leave it for a couple of hours. use it unplugged until it sleeps. leave for a couple of hours. plug it back in and then charge it to full. repeat every 1-2 months. also its perfectly fine to leave it on charge for long periods of time. just remember to calibrate.

while doing the first charge up... if it's plugged in can i use the laptop??
or is it recommended to just leave it alone while it charges??

frogywill
Feb 5, 2008, 10:48 PM
i was reading somewhere else that the battery takes forever to charge to 100%. I guess it might be true... Went to zero today, plugged it in at around 5:30, came back at 8:30 and it still is not full. (0:52 until full)...

That kinda sucks.....

Jeremy1026
Feb 5, 2008, 10:52 PM
i was reading somewhere else that the battery takes forever to charge to 100%. I guess it might be true... Went to zero today, plugged it in at around 5:30, came back at 8:30 and it still is not full. (0:52 until full)...

That kinda sucks.....

My macbook takes about 4hours to go from dead to 100%...sounds about right

goose1873
Feb 7, 2008, 10:52 AM
How does one "condition" a new battery?

PieMac
Feb 7, 2008, 11:59 AM
So even though there's no mention of a need to calibrate the MBA, I decided that it couldn't hurt and I calibrated my new MacBook Air right away per Apple's instructions on their website for the Macbook/Macbook Pro line: fully charged it when I initially plugged it in, after reaching full charge, let it stay charging for at least two full hours, then unplugged and let it discharge and go to sleep and left it sleeping for five hours (well, actually it may have been closer to 4-4.5 hours-it was in deep sleep mode when I woke it and plugged it back in) and then I fully recharged. Now it's saying that my full charge battery capacity is 4899 mAh whereas the original battery capacity was 5200 mAh...why would it have dropped this much after calibrating? Is this normal?

ahaxton
Feb 7, 2008, 12:02 PM
So even though there's no mention of a need to calibrate the MBA, I decided that it couldn't hurt and I calibrated my new MacBook Air right away per Apple's instructions on their website for the Macbook/Macbook Pro line: fully charged it when I initially plugged it in, after reaching full charge, let it stay charging for at least two full hours, then unplugged and let it discharge and go to sleep and left it sleeping for five hours (well, actually it may have been closer to 4-4.5 hours-it was in deep sleep mode when I woke it and plugged it back in) and then I fully recharged. Now it's saying that my full charge battery capacity is 4899 mAh whereas the original battery capacity was 5200 mAh...why would it have dropped this much after calibrating? Is this normal?

Don't worry just software bug. My battery works longer now, but when I first calibrated it, it was stuck on battery finishing charge. Easily fixed it by unplugging and plugging back in then rebooting and it was 100% and my battery life went up.

A note to all if you see it taking longer than it should and if you have already calibrated, simply unplug adapter, shut down mba, plug it back in, turn on mba.

PieMac
Feb 7, 2008, 12:07 PM
Don't worry just software bug. My battery works longer now, but when I first calibrated it, it was stuck on battery finishing charge. Easily fixed it by unplugging and plugging back in then rebooting and it was 100% and my battery life went up.

A note to all if you see it taking longer than it should and if you have already calibrated, simply unplug adapter, shut down mba, plug it back in, turn on mba.

I figured I might not be getting an accurate reading, but I tried what you did plus running repair permissions and then rebooting and it still reads the same...actually it now reads a little lower: 4883 and with 3 charge cycles?? I'm hoping it will eventually creep back up again closer to the 5200 level. My MacBook Pro would fluctuate but then it was almost a year old...not brand new. Otherwise, my MBA seems to be fine-charging up to full capacity and in nominal time with no issues.

cedar
Feb 7, 2008, 12:53 PM
What would be a reasonable expectation in terms of battery use time from 100% to 0%, surfing the internet?

ahaxton
Feb 7, 2008, 01:07 PM
What would be a reasonable expectation in terms of battery use time from 100% to 0%, surfing the internet?

I'd say for 1.6/80 it'd be somewhere in the 4 hour range.
Of course if you got SSD you'll enjoy a whole lot more :)

pjmurphy77
Feb 7, 2008, 01:51 PM
Not per Mossberg this morning....

"In this test, the SSD made little difference in the MacBook Air and, in fairness, Apple is making no claims of any significant battery-life gains on its SSD model. The SSD MacBook gave me just five more minutes of battery life. Apple says this is because its hard-drive model already uses a very low-power drive."



I'd say for 1.6/80 it'd be somewhere in the 4 hour range.
Of course if you got SSD you'll enjoy a whole lot more :)

cedar
Feb 7, 2008, 02:32 PM
I got 2 hours, 54 minutes surfing the internet, with about 5 minutes playing video's on utube. A little disappointed.

richard.mac
Feb 7, 2008, 06:34 PM
I'm sorry: I don't understand "calibrate" in this context. Could you fill me in? Thanks. :o

read the whole post that you quoted and you may find your answer.

while doing the first charge up... if it's plugged in can i use the laptop??
or is it recommended to just leave it alone while it charges??

perfectly fine to use it while calibrating.

ahaxton
Feb 7, 2008, 06:38 PM
I got 2 hours, 54 minutes surfing the internet, with about 5 minutes playing video's on utube. A little disappointed.


Did you calibrate?

cedar
Feb 7, 2008, 07:26 PM
Did you calibrate?

No, before. I thought the calibration just adjusted the indicator. Does it extend the battery life?

PieMac
Feb 8, 2008, 04:50 PM
No, before. I thought the calibration just adjusted the indicator. Does it extend the battery life?

I think it does both...anybody?

aiongiant
Feb 8, 2008, 05:14 PM
i think it does extend battery life

i did it just in case haha
i left it untouched while calibrating the first charge

if i dim down brightness and turn off wifi
i can get around 5 hours 30 min
if i have it full brightness and with wifi watching a movie
i get around 2.5 hours

diabolic
Feb 8, 2008, 05:40 PM
I got 2 hours, 54 minutes surfing the internet, with about 5 minutes playing video's on utube. A little disappointed.

I'd try doing the calibration or a SMC reset.

I've been getting over 4 hours on battery just doing email, web, and other minor programs.

larryj
Feb 8, 2008, 05:57 PM
I think I'm getting too wrapped up in the battery capacity issue. I need to turn off the indicator in the menu bar. I'm becoming obsessed. :)

Actually, after calibrating the battery the other night and doing that SMC reset, I think the indicator is showing that my battery is in better shape.

But it moves around so much that it fools me a lot. I'll see it at 2 hours and think, "but it was just at 3 hours!". Then it will be at 3+ hours a couple of minutes later.

I really need to turn that off.