Macbook Air Rev. C battery life?

[sofaking30]

can anybody post their results? i think there should be a consolidated list of revs with battery life/usage for a direct comparison. post your rev a and b results too...

[Maven1975]

can anybody post their results? i think there should be a consolidated list of revs with battery life/usage for a direct comparison. post your rev a and b results too...

Im seeing about 30 minutes extra. I also finding the battery charges much quicker.

[stoconnell]

Im seeing about 30 minutes extra. I also finding the battery charges much quicker.

Faster charge time would be welcome indeed. I think the MBAs battery seems to be a slow charger.

[sofaking30]

Im seeing about 30 minutes extra. I also finding the battery charges much quicker.

Do you have an exact number?

Faster charge time would be welcome indeed. I think the MBAs battery seems to be a slow charger.

^^^

[ayeying]

I'm at 4:30 Hours w/ Vista Virtual Machine running. Recharging takes about 2 hours from 0->~90% for me now compared to my rev A which 0->80% takes ~3 hours.

[Scottsdale]

I hadn't thought of these differences with charging, but I remember my rev B taking forever the first few weeks. My new MBA charges in a few hours. In addition, I turned the display down to three bars from bottom yesterday and got over 4:30. Was in dark lighting and wanted to see how long it could last. I never tried that with my other MBA. At the same time, even when turning display down to half brightness, I never got more than 3:15. Overall, the battery is better!

[unagimiyagi]

Why does Rev. C have better battery life than Rev. B? I see that the battery increased to 40 wH from 37 wH, but is that enough to account for the stated 30 min extra? Is this better battery life replicable?

[aleksandra.]

Recharging takes about 2 hours from 0->~90% for me now compared to my rev A which 0->80% takes ~3 hours.

That sounds similar to revision B - what's the time of full charge?

[darrellishere]

I noticed today at the apple store when comparing my Rev b, that the screen on the Rev C was 1 or two steps dimmer at full brightness!

[haoqfu]

That sounds similar to revision B - what's the time of full charge?

just wondering if the charging time means charging while using mba or charging while completely shut down?

[iaymnu]

I noticed today at the apple store when comparing my Rev b, that the screen on the Rev C was 1 or two steps dimmer at full brightness!

+1

my 2.13/ssd is a 1 step dimmer @ full brightness. I am happy since i don't have those dreaded lines. :D

[pinchu71]

i wonder if the battery in the air rev c, has 1000 cycles as the new battery technology found in the macbook pro line, or is the same old technology found in previous laptops (300 cycles of recharge)

[aleksandra.]

i wonder if the battery in the air rev c, has 1000 cycles as the new battery technology found in the macbook pro line, or is the same old technology found in previous laptops (300 cycles of recharge)

Yes and no:

Battery Lifespan

For Apple notebooks with removable batteries — such as previous generation MacBook, MacBook Air, and MacBook Pro computers — a properly maintained battery is designed to retain up to 80% of its original capacity at 300 full charge and discharge cycles. You may choose to replace your battery when it no longer holds sufficient charge to meet your needs.

The built-in battery of the MacBook Air is designed to retain up to 80% of its original capacity at up to 750 full charge and discharge cycles.

The built-in battery in the new 13-, 15-, and 17-inch MacBook Pro is designed to retain up to 80% of its original capacity at up to 1000 full charge and discharge cycles.

If your notebook came with a built-in battery, you should have the battery replaced only by an Apple Authorized Service Provider.

I'm probably not the only person wondering if this battery would fit in revision B Air...

[Shrek-Moscow]

Umm..
my rev A is showing 245 cycles and 94% capacity, when new was about 98%.. how it's possible that it will drop to around 80% in 55 more cycles?

It looks that, to lose another 4%, I'll have to make another 250 cycles!
90% @ 500 cycles? may be than it will drop faster to 80%.. but the figure of 80% @ 300 cycles looks to me irrealistic even on rev A.

Are you shure that MBA battery, since the beginning, has not always been a member of the "80%-@-1000cycl." family??

[aleksandra.]

Umm..
my rev A is showing 245 cycles and 94% capacity, when new was about 98%.. how it's possible that it will drop to around 80% in 55 more cycles?

It looks that, to lose another 4%, I'll have to make another 250 cycles!
90% @ 500 cycles? may be than it will drop faster to 80%.. but the figure of 80% @ 300 cycles looks to me irrealistic even on rev A.

Are you shure that MBA battery, since the beginning, has not always been a member of the "80%-@-1000cycl." family??

This estimate just refers to Apple's battery replacement policy - you don't have to pay if it drops below 80% with less than 300 cycles, in the first year. Even previous generation MB/MBPs batteries sometimes remained above 90% at over 300 cycles. It really differs between units, I'm at 44 cycles and battery health is 92%. I think Air's battery had perhaps increased capacity, but apparently not increased lifespan.

[unagimiyagi]

I am highly skeptical that apple's new batteries will perform like new for 1000 charge cycles. Why? Because I don't see how Apple could out-invent dedicated battery companies. If this tech were promising, we'd be hearing about it. HP has a battery made by Boston battery that is supposed to be just like Apple's, but I don't know much more than that. Second, Apple is well-known to exaggerate claims, more so than their competitors. I hope I'm wrong, but time will tell. They aren't shy to call the ability to record video an amazing new feature in the new iphone 3gs, nor about their LED screens being mercury free and brighter, etc, as if other notebooks' led screens are different.

[Vorst]

I am highly skeptical that apple's new batteries will perform like new for 1000 charge cycles. Why? Because I don't see how Apple could out-invent dedicated battery companies. If this tech were promising, we'd be hearing about it. HP has a battery made by Boston battery that is supposed to be just like Apple's, but I don't know much more than that. Second, Apple is well-known to exaggerate claims, more so than their competitors. I hope I'm wrong, but time will tell.

Yes!! Apple created their own battery technology. Each cell in the battery pack is charged separately and is processor controlled, to give the most optimal charging cycle. Other manufacturer batteries are charged till a certain voltage is reached and then stop charging. Go to Apple website and search for the video which explains the technology in detail.

[ayeying]

If its 750 cycles... then I'm happy. I'm already at 70 cycles for my Rev C and I've owned the system for just 3 weeks