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Battery charging time on Rev.B MBA

F

faxao

macrumors regular
Original poster
Feb 20, 2008
177
12
Milano, Italy
The recharging time on my brand new Rev.B MBA after a full discharge took today 6 hours (3 cycles on battery). Is this normal?

I have read that battery charge is quite slow on MBAs but 6 hours.....:confused:

Thanks

p.s. apart from that Rev.B MBA rocks !!:p
 
I'm assuming that it's new, or relatively new? For whatever reason, the first few charge cycles on the MBA take forever. My first few with over 10 hours. It'll drop down though, no worries. Now it takes about 2-3 hours to charge mine, 4 from dead empty.
 
Mine takes quite a while to charge, but that aspect of the battery doesn't bother me a whole lot.
My battery doesn't last too long... I think I give it about 2 1/2 hours without doing intensive work and with as much power savings options as I can on.
 
jackiecanev2 said:
I'm assuming that it's new, or relatively new? For whatever reason, the first few charge cycles on the MBA take forever. My first few with over 10 hours. It'll drop down though, no worries. Now it takes about 2-3 hours to charge mine, 4 from dead empty.
Click to expand...

Yes ..it is infact brand new: as a matter of fact this was the first full charge since I have switched it on for the first time 3 days ago....

Hope it will get better soon and in the meantime I enjoy this awesome laptop, the snappiest I have ever owned :cool:

Thanks for the prompt responses...
 
andreab35 said:
Mine takes quite a while to charge, but that aspect of the battery doesn't bother me a whole lot.
My battery doesn't last too long... I think I give it about 2 1/2 hours without doing intensive work and with as much power savings options as I can on.
Click to expand...

I'm thinking of buying my sister either a Macbook or MBA for University but are you saying the MBA battery only gives you around 2.5 hrs use?? Is that normal? My girlfriend has the new Macbook Pro and she is getting around 4hrs on it and i've got the previous gen macbook pro and i'm getting around 4-4.5hrs. So to me 2.5 is pretty poor.
 
GMACUK said:
I'm thinking of buying my sister either a Macbook or MBA for University but are you saying the MBA battery only gives you around 2.5 hrs use?? Is that normal? My girlfriend has the new Macbook Pro and she is getting around 4hrs on it and i've got the previous gen macbook pro and i'm getting around 4-4.5hrs. So to me 2.5 is pretty poor.
Click to expand...

2.5 is pretty poor, I might get that with heavy downloading or something. I get about 4 hours for browsing and light office type use.
 
GMACUK said:
I'm thinking of buying my sister either a Macbook or MBA for University but are you saying the MBA battery only gives you around 2.5 hrs use?? Is that normal? My girlfriend has the new Macbook Pro and she is getting around 4hrs on it and i've got the previous gen macbook pro and i'm getting around 4-4.5hrs. So to me 2.5 is pretty poor.
Click to expand...

2.5 hours is pretty poor I do agree... for what Apple claims that this baby is supposed to get around 4 hours of battery life.
But, don't let that stop you from purchasing a MBA. It's a beautiful machine that is so rewarding to have.
If my battery does get worse, it's going to the Genius Bar.
 
Battery Charge

I am glad that you brought this up, because I got my new Rev b 1.8/128SSD, Tuesday (4 days ago!) and it's taking the longest time to charge. I was wondering what was up with that.

Meanwhile, I really love this upgrade. It is soooo much faster than my rev A 1.6/80G-- and no lines (I was so worried about that...).
 
GMACUK said:
My girlfriend has the new Macbook Pro and she is getting around 4hrs on it and i've got the previous gen macbook pro and i'm getting around 4-4.5hrs. So to me 2.5 is pretty poor.
Click to expand...

Try encoding a movie - good luck with having more than 1.5 hours on MBP ...

BryanHarig said:
2.5 is pretty poor, I might get that with heavy downloading or something. I get about 4 hours for browsing and light office type use.
Click to expand...

MBA.B SL's consume less at idle, than P/T's in UMBP's, but when you load them max - you essentially have the same chip (same die, same 45nm tech, even same cache), and 30% speed difference (1.86 vs 2.53) doesn't translate into same power consumption difference ...
Whatever thermal difference you have mostly helped by still lover voltages on SL's.
That means MBA's consume comparable energy under load, so while having 2/3 of MBP's battery, they scale the runtime losses much faster.
 
EspressoLove said:
Try encoding a movie - good luck with having more than 1.5 hours on MBP ...



MBA.B SL's consume less at idle, than P/T's in UMBP's, but when you load them max - you essentially have the same chip (same die, same 45nm tech, even same cache), and 30% speed difference (1.86 vs 2.53) doesn't translate into same power consumption difference ...
Whatever thermal difference you have mostly helped by still lover voltages on SL's.
That means MBA's consume comparable energy under load, so while having 2/3 of MBP's battery, they scale the runtime losses much faster.
Click to expand...

Yeah with a bunch of stuff in background I get 2.5-3 hours at most. It's enough for me. I don't even carry the battery charger around. I just use it for notes on the go.

As far as charging, it doesn't really bother me because it stays charged overnight. I am getting work to buy me a battery adapter, till then I'll start using it at work as well.

I love this mba, got the rev b with the hd option. To me it's a little slow to open stuff but once it's open, the hard drive becomes negated. I don't notice any real slow downs. Then again I don't encode stuff or move huge stuff around on my hd.

I still prefer windows on my desktops, but when it comes to laptops, OSX is just so productive. (Spaces, GESTURES!!, keyboard short cuts) this mba definitely feels like a fully fledged out keyboard.
 
EnderTW said:
... when it comes to laptops, OSX is just so productive. (Spaces, GESTURES!!, keyboard short cuts) this mba definitely feels like a fully fledged out keyboard.
Click to expand...

Yeah, I'm envious for you ;):cool::D
Nearly bought 2.4MB, but I still cringe at how ugly it is [screen] when sitting next to MBA & MBP.

It's beyond me why they have it in window display at [SF] Apple store side by side.
MBA & 15"UMBP look surprisingly the same, and MB's plain ugly :mad:
 
After 2.5 months with my rev b it takes 8.5 hours to charge from 0 to full.

Same as it did in early november when i got it.
 
McGilli said:
After 2.5 months with my rev b it takes 8.5 hours to charge from 0 to full.

Same as it did in early november when i got it.
Click to expand...

Oh man, that sucks ...
As they say - never buy rev.B products, or do they ;):D

Did you try to talk to geniuses? (or Apple Suport 1-800 if you not close to store)

You have to insist (that it's "not within the spec" ... which prob. not exitsts btw) - just yesterday I was literally schooling a genius ....
He's nice guy and all, he even worked at Mac repairs shop before for few a years, but I still managed to impress him (he btw inspected my MBP i was carrying :rolleyes:).
And the thing was - replace top case (with keyboard) on an out of warranty [white]MB - He said it's not possible (I have to pay) ...
And it took quite a while, and my firm insistence that it's not the case.

Be polite yet appeal to a common sense - not the specs - try to keep conversation within english - not techy ;)
 
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