Apple Event: May 7th at 7 am PT

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

MacBook Air 13 Inch (Mid 2013) Battery Life?

I recieved this MacBook Air yesterday and performed a full charge cycle to calibrate the battery's microprocessor, but I'm still getting far under Apple's 12 hour estimate when surfing the web even at 50% rather than 75% brightness. Anyone else out there having these issues or that could help?

MacBook Air (13-inch Mid 2013), OS X Mountain Lion (10.8.4)

Posted on Jun 20, 2013 9:57 AM

Reply
Question marked as Best reply

Posted on Jun 20, 2013 10:01 AM

The apple estimate of battery life time is just that, a Estimate. In the real world it could be longer, by a little, or much shorter depending on how you are using your mac.


Doing a full discharge is not suggested for Li-Ion batteries so I suggest you don't do that again. The battery is already calibrated from the factory. Fully discharging it will only cause harm to the battery.

52 replies

Jun 28, 2013 2:53 PM in response to Hyper7Death

I am having the exact same problem. I got a brand new June 2013 Macbook Air with all of the hardware upgrades available (8gb memory, i7 1.7 ghz processor, 500gb storage). I get around 5 hours of battery life tops, after 1 week of "leveling out", no improvement. I called apple and they sent me a new Macbook Air. The new one has the same exact problem. I find this absolutely ridiculous. When i go to best buy and unplug their display macbook air, the display says 10 hours of battery.


I did a test, on both of my macbooks, The original one they sent, as well as the replacement. After one hour, the original was at 85% and the replacement was at 75%. That is not okay....i don't know what to do at this point. I guess I just have to accept that I'm only going to get 5 hours of battery life. It doesn't make sense why the one at Best Buy clearly gets 10 hours. I feel cheated and confused.

Jun 28, 2013 3:24 PM in response to noname14

Noname14,

It's a waste of time to send it back, that's not a good long term solution. Go to an applestore and have them do a battery diagnosis. If the diagnosis passes then the new one they send will be the same. It might just be that at Best buy their display model wasn't an i7 or that it literally had NO APPS on it and no memory was being used.

Jun 28, 2013 3:57 PM in response to rezalution

That's probably what I'll have to do. The nearest apple store is 2 hours away. The display model at bestbuy was definitely not at i7. I checked. If this is really the case, and i7's get half as much battery life, I feel like that should be a pretty big disclaimer on their website. I'm probably going to have to go to the apple store and after 4 hours of drivin there and back they will likely tell me that it is what it is. I still feel like its false advertising though. The MacBook Air I got in 2010 has better battery life than the brand new one they just sent me...that's pretty depressing.

Jun 28, 2013 5:01 PM in response to LowLuster

its not defective, its a FASTER processor, running HOTTER and gobbling a LOT more batt juice.....


NONAME said--- "and i7's get half as much battery life" BINGO!!!!



thats what it seems nobody knows, the 12 hour magic life does NOT apply to the I7 processor, period. Love apple, but dont think the AIr should be made with this battery vampire.



Jun 28, 2013 5:52 PM in response to rezalution

Haswell DOES cause long (insane long) battery life, I have one…..but that’s ONLY on the I5 processor NOT the I7 processor


Hawell drastically HELPS batt life.......but a HOTTER processor eating MORE POWER........obviously, is not going to get close to what the I5 eats.


Look at Apple.com website HERES THE PROOF:::


you see that number 4 after "Power".........? well, lets see what 4 says.........


User uploaded file


User uploaded file




The FINE PRINT of 4 basically says -- "this is for I5 processors!"



Badda bing , badda boom.

Jun 28, 2013 5:58 PM in response to rezalution

the additional 4gb of mem is opperating at 1.35volts, .....that 4gb additional is nibbling very little batt.


Also, unless youve got tonnage of apps and vids running, that additional 4GB of memory is often taking a snooze, power-wise.



Also, when MAVERICKS comes out, batt life on the Airs will increase further due to the change it how it forces background programs to use drastically less power


a REAL BIG GREAT thing there to wait for!

Jun 28, 2013 8:50 PM in response to Hyper7Death

I had posted earlier that I was just getting 5-6 hrs, and saw a post by someone that the new MacBooks do a lot of indexing etc. and could contribute to battery drain. This might be correct because I've had mine since June 26th, and monitored the Activity Log as others suggested, and I just shut down for a restart and now suddenly the meter reads 11:36 hrs at 100% charge. I am surfing the net now, nothing major running and I will watc how the battery decreases.

Jun 29, 2013 3:07 AM in response to noname14

I have good news. I left my macbook air on (disabled sleep mode), with automatic brightness, no programs running so that I could time the fully charged battery life. it got exactly 5 hours of battery life before it died. after it died i let it sit there for a few hours.


then i plugged it back in, without turning it on, until it was fully charged and the light was green. when i finally turned it on, the battery meter said I had 13 hours of battery life left. this was higher than anything i had ever seen before.


thinking it was a fluke, i left it on again (disabled sleep, no program etc), and after 5 hours of sitting on, it still had 65% battery life left! i'm not sure what happened here. i assume the battery was recallibrated (even though i have been numerous times that macbook airs come pre-callibrated and that this would be a waste of time).


Needless to say, I am extremely satisfied that I found the solution to this dilemma. If anyone else is having a similar problem I suggest you do what I did. I wish someone from apple supprort would have told me to do this. Clearing the p-ram did nothing. turning it off and restarting did nothing. I had to let the battery fully deplete, sit for a few hours, then charge it completely before turning it on.

MacBook Air 13 Inch (Mid 2013) Battery Life?

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.