This contains some really useful info (and a LOT of it ) about batteries and charging. Did not know it was bad to let the charge go down to a few % before recharging. Thanks!
OT: what users are reporting here has little if anything to do with charging issues or battery life. It's talking about situations where battery power - in sleep mode - goes from 90% to 10%, overnight, on mostly new computers. This means for some hardware or software reason that mac is not going to sleep and continues running, even though the lid is closed.
Hello all, I have the same issue, my macbook pro 13 retina late 2013 drains the battery in sleep mode, it seems that the laptop is not going to sleep, and I am agree with you illcuzz1, that some hardware or software is blocking the macbook to going to sleep.
Here is the output of EtreCheck, just in case it will be usefull.
MacBook Pro (Retina, 13-inch, Late 2013)
MacBook Pro - model: MacBookPro11,1
1 2.8 GHz Intel Core i7 CPU: 2 cores
16 GB RAM
Intel Iris - VRAM: 1024 MB
OS X 10.9.1 (13B3116) - Uptime: 0 days 19:21:2
APPLE SSD SM0256F disk0 : (251 GB)
EFI (disk0s1) <not mounted>: 209,7 MB
Macintosh HD (disk0s2) /: 250,14 GB (193,88 GB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
Apple Internal Memory Card Reader
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. thunderbolt_bus
com.avast.PacketForwarder (1.4 - SDK 10.9)
com.avast.AvastFileShield (2.1.0 - SDK 10.9)
ChmodBPF: Path: /Library/StartupItems/ChmodBPF
Problem System Launch Daemons:
Problem System Launch Agents:
[loaded] com.adobe.fpsaud.plist 3rd-Party support link
[loaded] com.avast.init.plist 3rd-Party support link
[loaded] com.avast.uninstall.plist 3rd-Party support link
[loaded] com.oracle.java.Helper-Tool.plist 3rd-Party support link
[loaded] com.oracle.java.JavaUpdateHelper.plist 3rd-Party support link
[not loaded] com.teamviewer.teamviewer_service.plist 3rd-Party support link
[loaded] org.macosforge.xquartz.privileged_startx.plist 3rd-Party support link
[loaded] com.avast.userinit.plist 3rd-Party support link
[loaded] com.oracle.java.Java-Updater.plist 3rd-Party support link
[not loaded] com.teamviewer.teamviewer.plist 3rd-Party support link
[not loaded] com.teamviewer.teamviewer_desktop.plist 3rd-Party support link
[loaded] org.macosforge.xquartz.startx.plist 3rd-Party support link
User Launch Agents:
[loaded] com.adobe.ARM.[...].plist 3rd-Party support link
[loaded] com.avast.home.userinit.plist 3rd-Party support link
[loaded] com.google.keystone.agent.plist 3rd-Party support link
User Login Items:
FlashPlayer-10.6: Version: 126.96.36.199 - SDK 10.6 3rd-Party support link
QuickTime Plugin: Version: 7.7.3
AdobePDFViewerNPAPI: Version: 11.0.06 - SDK 10.6 3rd-Party support link
AdobePDFViewer: Version: 11.0.06 - SDK 10.6 3rd-Party support link
Flash Player: Version: 188.8.131.52 - SDK 10.6 3rd-Party support link
Default Browser: Version: 537 - SDK 10.9
JavaAppletPlugin: Version: Java 7 Update 51 3rd-Party support link
BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
AirPlay: Version: 1.9 - SDK 10.9
AppleAVBAudio: Version: 2.0.0 - SDK 10.9
iSightAudio: Version: 7.7.3 - SDK 10.9
3rd Party Preference Panes:
Flash Player 3rd-Party support link
FUSE for OS X (OSXFUSE) 3rd-Party support link
fuse-ext2 3rd-Party support link
MacFUSE 3rd-Party support link
avast! Preferences 3rd-Party support link
TeXDistPrefPane 3rd-Party support link
Time Machine not configured!
Top Processes by CPU:
Top Processes by Memory:
147 MB Safari
98 MB WindowServer
82 MB mds_stores
33 MB Finder
33 MB Dropbox
Virtual Memory Information:
9.71 GB Free RAM
3.62 GB Active RAM
1.03 GB Inactive RAM
1.24 GB Wired RAM
9.01 GB Page-ins
0 B Page-outs
Same problem here, after sleeping a night the battery is either low or totally discharged (I suspect this depends on the number of hours I sleep). It worked ok since I received it on the 18th December 2013 (one month ago) until a couple of days ago. I haven’t changed anything related to power, at least not intentionally or consciously, and since it’s warmer than the environment when I take it off the “Incase” it seems that it stays awake while I'm asleep. I’ve installed Avast and an Adobe Flash plugin for Safari a couple of days ago… Anyone knows if any of these can be the responsible for the change in beavior?
My first, it’s a great Macbook Pro Retina 13.
~~~~The keyboard cover could just keep the lid form properly closing
Yes, yet another miserable attribute of keyboard covers.
Apple additionally now recommends against using these keyboard covers on current Macbooks:
~~~Did not know it was bad to let the charge go down to a few % before recharging. Thanks!
Its not bad on the battery, its horrible on it.
some usefull, partially "ok, interesting" information on same
Gaming: In cases of heavy and frequent use in gaming it is recommended, if possible, to keep your Mac plugged in since these frequent fast and deep discharges of the battery are not ideal for battery longevity.
If you were to always keep your macbook battery floating between 20% and 80% charge roughly, then you’d have no other considerations to make about your battery and its care,… except for long-term storage.
Natural changes of capacity in lithium batteries happens when they undergo cathode degradation at roughly 20% per year where Ion exchange becomes less efficient. Mostly low draining (deep DOD) and to a much lesser degree high standing charge rates accelerate this process. Unnatural capacity for lithium battery charges changes, and chemistry changes in a lithium battery when often pushed or pulled to extremes
In a lithium battery, deep discharges alter the chemistry of the anode to take up lithium ions and slowly damages the batteries capacity for the cathode to transport lithium ions to the anode when charging, thereby reducing max charge levels in mAh. In short, radical swings of power to lithium cells disrupts the chemical ecosystem of the battery to hold charges correctly which likewise impedes the perfect transfer of lithium ions both in charging and discharging. In charging your lithium battery, lithium ions are “pushed uphill” (hard) to the anode, and discharged “downhill” (easy) to the cathode when on battery power. Deep discharges, damages this “upward” electrolyte chemistry for the battery to maintain a healthy charge and discharge balance relative to its age and cycles.
Optimally, in terms of a healthy lithium battery and its condition, it is most happy at 50% between extremes, which is why low-power-drain processors such as the Haswell are ideal on lithium battery health since a partially charged battery with a low-drain processor has, in general, much more usage in hours
Battery calibration, battery memory, battery overcharging, battery training, …all these concepts are mostly holdovers from much older battery technology, and on older Apple portable Macbooks ranging from early nicads, NiMh and otherwise; and these practices do not apply to your lithium battery and its smart controllers.
Calibrating the battery on older Apple portable Macbooks with removable batteries.
There is no calibration of current Apple portable Macbooks with built-in batteries.
There is no battery calibration with current Apple portable Macbooks with built-in batteries. Lithium batteries have essentially a 0-‘memory’, and all such calibration involve the estimations fed to the system controller on the SOC (state of charge) of the battery over long periods of time as the battery degrades. The software based battery controller knows the battery's characteristics, or SOC and adjusts itself. This is why there is both no need and purpose to periodically deeply drain your macbook battery, since it doesn’t affect the characteristics of the battery, and further still deep discharges are something you should not do on purpose to any lithium battery.
From BASF: How Lithium Batteries work
How its made, Lithium batteries
Bad discharging or battery use conditions:
Heat (due to environmental conditions or due to rapid discharges from heavy use = gaming / video editing)
Rapid discharging of the battery frequently causes chemical changes over time in the battery leading to decreased capacity and resistance of current flow.
The very worst use of your battery is often draining the battery very low, and worse still letting it remain in such a state.
*Most long-term rapid damage to the battery occurs from discharging it with high loading (gaming) conditions but paramount is avoiding deep and frequent low DOD (depths of discharge) in use.
Undesirable charging or charged conditions:
High perpetual SOC (state of charge), where the battery is always or very often connected to charge
Parasitic loading where the battery is both usually on and charging or worse both always charging and in sleep mode, since this induces mini-cycling of the battery.
Bad general handling conditions:
Temperature use conditions when either too hot (95F and above) or too cold (50F and below)
Storing your battery away with a low charge (40% and less) long-term.
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.
Ultimately counting charge cycles is of little to no 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.
People seem to be missing the original point of this post. This is not a battery issue or a keyboard cover issue.
The issue is, the computer appears to wake up, even though the computer should be sleeping.
After putting the computer to sleep, you'll find the computer warm and battery drained the next day. It appears the computer wakes up for no reason. This is with the lid closed too.
The new portables power memory during sleep. I set the hibernationmode = 25 to avoid this.
You can learn about this by typing the following command in your terminal:
$ man pmset
You can check your settings with
$ pmset -g | grep hibernatemode
You can set it with
$ sudo pmset -a hibernatemode 25
I hope this helps.
The terminal commands had no effect because it sounds like something is preventing your laptop from going to sleep, at all. And if doesn't go to normal sleep mode, it can never go into hibernation mode. So my guess is there is either a hardware issue (the lid does not close 100% - like in my case where a rubber keyboard cover got in the way) or some other software issue. Do you have the same problem when you put laptop to sleep by pressing the power button, instead of closing the lid?
My 2013 13" MacBook Pro was sleeping perfectly. Then I followed the instructions on this post:
Particularly, I did steps 2 and 3. Now my computer is no longer sleeping. I've set hibernatemode back to 3 and hopefully that will fix it.
Add me to the list of users with this problem. I thought this was normal until the first time the computer drained to 0% while I was away at work. Any other day, the Mac has been 99%.
At times I've seen the Apple Logo light up while the comptuer was closed/sleep.Today the computer was very warm and down to 75%. Time Machine has been off since day one, with only manual back-ups triggered as needed. In the console I see a number of attempts to establish a connection with my Time Capsule, although I highly doubt this along will cause such a battery drain.
I have an appoint at the Genius Bar over the weekend and I hope to get to the bottom of this soon.