I have this problem as well. I left my macbook pro retina on sleep mode(lid closed) on my desk to do some house chores. When i came back, it was freaking hot! And when i opened it, some strange smell came out from the keyboard area and the battery was down to half. But it is still working so i thought it was ok. Then it happened again today, I woke up and my macbook was turned off from sleep mode, the battery was depleted. It's so frustruating!
Its my first apple laptop, loving everything except this issue. If it happens one more time, I'm definetely going to a genius bar.
Often when this happens, there are many things running in the background that might not appear to be happening.
If you are not using an application currently and will not return to it for a while, quit the application. Either be in the application and hit command Q or right click on the icon on the dock and hit quit.
Check your settings to see how you have set up the energy saver preferences. Go to system preferences>energy saver. When you are on battery it is a good idea to "Put hard disks to sleep when possible." Disabling power nap will prevent your computer from constantly retriving info from the internet. Often our computers look idle, but they are constantly checking email, or downloading updates/music/software.
Go into the Mail app. Go to mail>preferences>general. Check for new messages less frequently, or even manually. This keeps your computer from constantly searching gmail, yahoo, aol...etc. for new messages.
I hope this helped!
I did a complete Internet Recovery (Cmd-Opt-R) for late 2013 MacBook Pro, then restored via Time Machine, and the problem seems to have gone away. Strangely, when I restored via Time Machine, all my apps and documents transferred over just fine, but not my settings. So I've had to reconfigure these setting (not a big deal), but more importantly, my computer is sleeping fine. So much better than having to shut down my computer every time. I'm on 10.9.1
Same problem. Happened few times now. Brand new macbookpro retina 13 inch, Mavericks 10.9.1.
I miss my old macbook pro's power/sleep light on the front - that as an easy way to tell if you're computer really was in sleep or not.
Any of you also using a fitted plastic case/cover by any chance (like Speck covers)? Just realising it's possible the lid doesn't close 100% now because of this cover and that's why it doesn't go to sleep and (obviously) continues to use battery power.
Will do some testing.
Seems I found the cause of my battery problem. Removed my keyboard protector (rubber see-through cover), closed the lid and overnight it only used 1% battery power. Could be coincidence but think this might be it.
For others - please make sure there is not anything in the way and that the lid closes snugly like it should.
And then there are the settings in EnergySaver as mentioned in other posts. But closing applications or checking activity monitor should definitely not be necessary to prevent this kind of battery drainage.
DO NOT SLEEP your macbook with power connected very often, it causes lithium battery damage over time and premature battery death.
Keep it plugged in when near a socket so you keep the charging cycles down on your LiPo (lithium polymer) cells / battery, but not plugged in all the time. When not being used for several hours, turn it off.
"Apple does not recommend leaving your portable plugged in all the time."
General rule to remember of Lithium batteries is:
Never drain them LOW & dont always/often store them HIGH
While cycle count is commonly seen to be the “miles” on your Lithium Ion pack cell in your Macbook, which they are, this distinction is not a fine line at all, and it is a big misconception to “count charge cycles”
*A person who has, for example, 300 charge cycles on their battery and is recharging at say 50-60% remaining of a 100% charge has better battery usage and care than another person who has 300 charge cycles at say 15% remaining on a 100% charge.
DoD (depth of discharge) is far more important on the wear and tear on your Macbook battery than any mere charge cycle count. *There is no set “mile” or wear from a charge cycle in general OR in specific. As such, contrary to popular conception, counting cycles is not conclusive whatsoever, rather the amount of deep DoD on an averaged scale of its use and charging conditions.
(as a very rough analogy would be 20,000 hard miles put on a car vs. 80,000 good miles being something similar)
*Contrary to some myths out there, there is protection circuitry in your Macbook and therefore you cannot overcharge it when plugged in and already fully charged
*However if you don’t plan on using it for a few hours, turn it OFF (plugged in or otherwise) ..*You don’t want your Macbook both always plugged in AND in sleep mode (When portable devices are charging and in the on or sleep position, the current that is drawn through the device is called the parasitic load and will alter the dynamics of charge cycle. Battery manufacturers advise against parasitic loading because it induces mini-cycles.)
Keeping batteries connected to a charger ensures that periodic "top-ups" do very minor but continuous damage to individual cells, hence Apples recommendation above: “Apple does not recommend leaving your portable plugged in all the time”, …this is because “Li-ion degrades fastest at high state-of-charge”.
This is also the same reason new Apple notebooks are packaged with 50% charges and not 100%.
LiPo (lithium polymer, same as in your Macbook) batteries do not need conditioning. However...
A lot of battery experts call the use of Lithium cells the "80% Rule" ...meaning use 80% of the charge or so, then recharge them for longer overall life.
Never let your Macbook go into shutdown and safe mode from loss of power, you can corrupt files that way, and the batteries do not like it.
The only quantified abuse seen to Lithium cells are instances when often the cells are repeatedly drained very low…. key word being "often"
Contrary to what some might say, Lithium batteries have an "ideal" break in period. First ten cycles or so, don't discharge down past 40% of the battery's capacity. Same way you don’t take a new car out and speed and rev the engine hard first 100 or so miles.
Proper treatment is still important. Just because LiPo batteries don’t need conditioning in general, does NOT mean they dont have an ideal use / recharge environment. Anything can be abused even if it doesn’t need conditioning.
From Apple on batteries:
Storing your MacBook
If you are going to store your MacBook away for an extended period of time, keep it in a cool location (room temperature roughly 22° C or about 72° F). Make certain you have at least a 50% charge on the internal battery of your Macbook if you plan on storing it away for a few months; recharge your battery to 50% or so every six months roughly if being stored away. If you live in a humid environment, keep your Macbook stored in its zippered case to prevent infiltration of humidity on the internals of your Macbook which could lead to corrosion.
Your battery is subject to chemical aging even if not in use. A Lithium battery is aging as soon as its made, regardless.
In a perfect (although impractical) situation, your lithium battery is best idealized swinging back and forth between 20 and 85% SOC (state of charge) roughly.
Further still how you discharge the battery is far more important than how it is either charged or stored short term, and more important long term that cycle counts.
Ultimately counting charge cycles is of little importance. Abuse in discharging (foremost), charging, and storing the battery and how it affects battery chemistry is important and not the ‘odometer’ reading, or cycle counts on the battery.
Everything boils down to battery chemistry long term, and not an arbitrary number, or cycle count.
Keep your macbook plugged in when near a socket since in the near end of long-term life, this is beneficial to the battery.