Going through the process of calibrating my MBP battery..... At the stage where it is fully charging up the first step in procedure.... After this you are to remaining leaving the charger attached for 2 hours ( can still use ) then after the 2 hours you are to unplug and basically let battery discharge..... Do I need to make energy saver settings to NEVER sleep for computer and display under battery power??
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Calibrating MBP battery??
- Thread starter spmiz12
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You leave it plugged in for 2 hours once it reaches full charge, then you unplug it and use it normally until the battery dies, close the lid and leave it alone for ATLEAST 5 hours. After atleast 5 hours you plug it back in and leave it plugged in until it is fully charged, you can use it while its charging but it must stay plugged in until fully charged.
Sorry, but when you not getting sufficient battery life from the start of anywhere near 8-9 hours; you try what others feel that has helped.
I calibrated mine a lot but that has little to do with the battery life I get. Sometimes when I open only one or two programs it just needs 2-5 W less power than usual. After 8 months I still don't really see a pattern.
It seems as if most of the time OSX is doing back ground stuff while very rarely it is not.
Eitherway once you actually use the Computer and do something battery life is nowhere near 8-9h but closer to 4 and quickly at 3.
Go ahead an try it but don't expect to much. At least I don't feel the calibartion does anything except to show little changes in the capacity coconut shows but that changes with normal cycles too. I guess calibration is just not necessary or much less often and thus has little to no effect. The battery life numbers simply got more and more unrealisitic every new generation.
It seems as if most of the time OSX is doing back ground stuff while very rarely it is not.
Eitherway once you actually use the Computer and do something battery life is nowhere near 8-9h but closer to 4 and quickly at 3.
Go ahead an try it but don't expect to much. At least I don't feel the calibartion does anything except to show little changes in the capacity coconut shows but that changes with normal cycles too. I guess calibration is just not necessary or much less often and thus has little to no effect. The battery life numbers simply got more and more unrealisitic every new generation.
Calibrating does not make your battery last longer. It simply improves the accuracy of the battery timer.
The op asked how to calibrate it not for your opinion on how people should use the battery. Also, I still like your signature.
Perhaps my opinion was expressed a bit coarsely, but only because there are 100's of threads on battery life already. And as ECUpirate pointed out, this "calibration" procedure does not affect the life of the battery - it only affects the accuracy of the reporting in the OS.
Thank you
Where does it say, leave it alone and dead for at least 5 hours? I haven't read this anywhere on Apples site. I thought you charge it to 100% drain it until it shuts down. Leave it dead for some minutes then just fully recharge it.
Appreciate that, I never knew about the 5 hour period. I guess those 5 hours of it being shut up just fully drain the battery yes?
