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Is it normal to lose 12% charge whilst the Macbook is sleeping overnight?
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Oddly enough the MacBook isn't listed there ... and the MacBook was introduced April 10th, yet that article was updated April 13th? I'm sure it's an oversight in the support document but can anybody 100% confirm if the MacBook is compatible with Power Nap? I can't see why it wouldn't be, though.
@OP - if you go to Apple menu>System Preferences>Energy Saver, is Power Nap listed there? If it is, disable it and you might get better battery.
If it isn't, please can you let us know? (I'd be interested to see why they wouldn't add in this feature)
Well you get better battery life on both the Retina MacBook Pro and the MacBook Air. Though it's still getting 9-10 hours, which is pretty good in the ultra-mobile industry.
So what Apple told you was true ... from a certain point of view.
Did you have any USB devices plugged in to charge while it was on sleep?
Well you get better battery life on both the Retina MacBook Pro and the MacBook Air. Though it's still getting 9-10 hours, which is pretty good in the ultra-mobile industry.
So what Apple told you was true ... from a certain point of view.
Did you have any USB devices plugged in to charge while it was on sleep?
This - I always forget about this and then wonder why it's drained my battery. Leaving a USB external drive plugged in is a killer.
Well you get better battery life on both the Retina MacBook Pro and the MacBook Air. Though it's still getting 9-10 hours, which is pretty good in the ultra-mobile industry.
So what Apple told you was true ... from a certain point of view.
Did you have any USB devices plugged in to charge while it was on sleep?
Nope, nothing connected. I've only had it a few days so I don't have any compatible devices.
Yes, I see a drop of about 1% per hour of sleep. It's because the rMB, as opposed to other Apple laptops, tries to stay constantly connected to WiFi, even with powernap disabled. If I switch off WiFi before putting it to sleep I loose 0% even if it sleeps for many hours.
That's not true. It stays connected for 3 or 4 hours before going to into deeper sleep like all other recent Macs.
No, that`s inaccurate. My own 1.2 and does not consume the battery when sleeping, nor do I disable WiFi, look at what you have installed. Just woke it after 36-48 hours 98%...
Q-6
I think it might have to do with the kind of WiFi router you have. I think what happens is that it has difficulties connecting, and then it consumes energy trying unsuccessfully to connect repeatedly. Often when it wakes up, it says it's connected, but there is no internet. Anyway, the evidence is clear. When WiFi is on, I loose 1% per hour, when it's off I loose 0%.
right, it's the power to the ram that consumes the battery during that period until the system writes the ram contents to disk and can then power down the ram. If there were no usb devices connected, the most likely scenario is that something is preventing the system from going into that deeper sleep state where it can shut off power completely.
In that case, it's probably not the wifi directly causing the problem, but rather some program keeping the network connection alive and preventing the computer from going fully to sleep.
I don't know what you mean by 'recent.' My 2011 MBA never stayed connected to WiFi while asleep. But perhaps it's true for more recent models, not only rMB.
I actually don't think that the wifi is supposed to stay connected, just that it keeps the system state stored in RAM for faster resume. On my MacBook it makes the sound of the network connecting a second or so after I open it, so wifi is not actually staying connected. Like I said above, if it is staying connected, it's likely because a program is not releasing the connection properly and your computer is never going to sleep, let alone hibernate.
I doubt it. The settings were transferred with migration assistant from my MBA, and the MBA did not have this problem. No new software installed.
But is there anyway I can check if something is going on in networks while asleep?
Moving your settings from one device to another is exactly the kind of thing that can cause these kind of issues.
In the Activity Monitor there is an Energy tab. Are there any processes that indicate that they are Preventing Sleep?
You should also run the command Queen6 posted above.
In the Activity Monitor there is an Energy tab. Are there any processes that indicate that they are Preventing Sleep?
You should also run the command Queen6 posted above.
I get a lot of these: Wake reason: RTC (Alarm). I can see from the Apple discussion forums that this is a common and unsolved problem with Yosemite. Perhaps El Capitain will solve it.
I set my 1.2 rMB up from new and have not seen this issue. I travel globally for work and my portable Mac`s therefore interact with multiple routers same story none have wake up issues on 10.10 so I rather suspect it`s more related to individual setup than hardware, all have been set up from scratch...
Q-6