Too Many Double posts for the same issue. look in the discussions before posting. I wrote the following on a previous discussion.
THIS IS JUST A SUGGESTION TO GET YOUR SYSTEM TO WORK AS EXPECTED. MAY OR MAY NOT WORK. FOR EXPERTS ONLY. This will clean out your system. Yes this is tedious amount of work. Hours to complete 3-4 days. 1/2 day to backup if needed. 2 days for battery calibration and 1/2 a day to reinstall. DO NOT SKIM INSTRUCTIONS AND READ ALL THE INSTRUCTIONS BEFORE PROCEEDING.
My Specs...
Bought in August 2012
13" Macbook Air 2012
I5-3427u 1.8GHz
128GB @ 30% usage
8GB RAM
10.9.0 Mavericks
6500mah(left)/6700mah(stock) @ 29 cycles
Turbo Boost Disabled.
Screen @ 50%
No USB Devices or SD card
Headphones connected.
Wifi On:
~9-10HRS (reading and music).
~5-7hours programming and compiling programs.
Wifi OFF:
~6.5hours 1800kbps 720p video.
~7 hours 1000kbps 480p video.
Remember how to do a SMC RESET AND PRAM RESET for your particular machine before doing this.
0.Back up all your stuff via timeline or your own method on a seperate EXTERNAL Device. Drain your battery from 100% to 5% continously. DO not turn your computer off and on or sleep while draining. DO NOT OVER USE your battery. I.E. Gaming or watching a 1080p video. Safari and playing music OK. Nothing more. NO FLASH OR YOUTUBE. Keep it idle. Install caffine if you have too. OVER ALL KEEP YOUR CPU USAGE under 5% WHILE DRAINING YOUR BATTERY. After draining your computer's charge to 5% keep it asleep for 5 hrs or more if youd like.(No more than 1 day though). Plug it back in to AC 4 hours (try using the grounded charger instead of the travel charger). While its charging do not use it. Unplug for 2 hours.
1.Plug in your machine again. Do an SMC Reset and PRAM Reset.
1.HOLD cmd+r on boot. Loads repair Menu
2.go to disk utility and go click your drive and partition -> partition layout-> partition 1. Label your hard drive what ever you want. Default format is Mac OS (Journaled).
3. Exit Disk utility once you have a working partition to reinstall mavericks.
4. reinstall mavericks.
5. Test your battery once more till its 5%. Work with usage at 5% or below 5% usage. Surfing on Safari and playing music OK. Nothing more. NO FLASH OR YOUTUBE. (DO NOT INSTALL ANYTHING).
6. Once drained let your battery rest for 5 hours of drainage. -Plug it back into the AC for 5 Hours and don't use your computer during this time.
FIY anytime you completely drain your battery or battery is less than 50%. let your battery rest at least for 2 hours after recharging. Anytime your are recharging from above 50%. Use only up to 5% of your cpu power and very light use of flash if neccessary while recharging. To keep your battery healthy, use up to 5%-10% of total cpu power anytime using your battery. This means discharging and recharching.
For those who don't know this, even when your magsafe connector switches from red/orange to green, it is still charging, just at a slower rate. it takes about an hour more after it turns green to fully charge your battery.
Sorry for caps, its for those who don't read all the instructions and they wonder why their computer is still not working as expected.
HOPEFULLY THIS WORKS FOR YOU! 🙂.
Also, I replaced my original battery because my original battery health was varied from 60% ~80.1% health @ 70 Cycles. <-----Apple was a pain in the butt to get this replaced. Took 7~8 times going to the genius bar to get this replaced. Warned them that the battery health depreciated too quickly at 10 cycles it was 91% the first time I took it in.
