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Battery life for 13" and 15" Macbook Pro
- Thread starter fokmik
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- batteries macbook 15"
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Damn, I'm getting like 3 hours of battery life. Will give it a couple days, but this coupled with the keyboard that simply isn't as good as the too big of a trackpad, things are not boding well
There's no need to assume. You can see the batter specs if you look at the label of the battery from the iFixit link.
I'd bet VERY surprised if my math is off, as I used to work in a data centre doing power analysis of IT gear.
My new 15", which I haven't plugged in since I took it out of the box, is at 33% after about 4.5 hours. This is with light-to-moderate usage while getting it set up properly.
Seriously wtf, messenger?! That's one app I couldn't live without. Strange that that's the one that is drawing power. It doesn't for me. It's the friggin battery apps and Safari. We need OS updates!
Looks like the first battery draw-down will be right around 6:25. (Currently at 6:22, estimating 3 minutes remaining.)
I really don't understand it, but my battery life is fantastic with the new 15. Coconut Battery showed me 105% design capacity and it feels like it. I am getting about 13-15 hours of light use out of this thing (Learning and working with PDF, occasional search in safari, some streaming..). That being said, I have my brightness at around 40%.
I don't refer to the estimate, because the first one or two hours it always shows 20 hours left (which seems to be there maximum it can show). This is after 4 days of use and without any resets mentioned in this thread.
I don't refer to the estimate, because the first one or two hours it always shows 20 hours left (which seems to be there maximum it can show). This is after 4 days of use and without any resets mentioned in this thread.
I have deen watching this thread with great interest. My new tbMBP was consistently showing 6-6.5 hours battery life on a full charge, without any real heavy lifting. 2-3 tabs on Safari, Mail and Calendar, Twitter and iMessage open. Monitor at 11-12 clicks from the bottom. (FWIW iMessage seems to be a bit of a power hog, according to Activity Monitor)
Yesterday I ran down the battery from a full charge to 0 and restarted. Now my battery, under the same usage load, show 9-11 hours battery remaining on a full charge.
I'm no computer engineer, but the Remaining Battery Time estimate seems pretty variable, based on what you're doing RIGHT THEN. It's tough to be super accurate, given that CPU use ebbs and flows. I wanted a computer that could get a full day at work out of a charge. I'd say that now, after running out down, it can get the necessary 6-8 hours with some sleep periods, no question.
Yesterday I ran down the battery from a full charge to 0 and restarted. Now my battery, under the same usage load, show 9-11 hours battery remaining on a full charge.
I'm no computer engineer, but the Remaining Battery Time estimate seems pretty variable, based on what you're doing RIGHT THEN. It's tough to be super accurate, given that CPU use ebbs and flows. I wanted a computer that could get a full day at work out of a charge. I'd say that now, after running out down, it can get the necessary 6-8 hours with some sleep periods, no question.
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I'm on my 7th cycle, second one after the Sierra reinstall. This morning I woke up, unplugged, and see 20 hours as estimated time remaining! Obviously not accurate, but I've been on battery for 54 minutes and am only down to 96%. I've had Safari, Fantastical 2, Polymail, Slack, 2Do, and Messages open, and power consumption has been at about 250-350 mAH.
This seems even better than my first cycle after reinstalling Sierra.
The one thing I haven't done yet is the suggestion posted earlier in the thread for reducing the battery drain that happens while sleeping. Because of the holiday, over the past few days my MBP has been in sleep mode a lot. Seems like it loses way more battery than it should in sleep, so I wasn't able to get a good read on actual battery life while working on the first cycle after the Sierra reinstall. I'm pretty sure it was better than before the reinstall, but every time I put the computer to sleep it would lose a big chunk.
I can't see a downside to the fix that was suggested, so I'll do that now.
I'd love to hear reports from others that have reinstalled Sierra. What kind of real-world battery life are you getting now?
Also, has anyone tried the "battery drain while sleeping" fix? (i.e. sudo pmset -b standbydelay 3600)
P.S. I did not migrate data when I first set up my MBP, and reinstalling Sierra seems to have helped tremendously for me. So I'd suggest that anyone having battery issues do this, regardless of whether they migrated data.
This seems even better than my first cycle after reinstalling Sierra.
The one thing I haven't done yet is the suggestion posted earlier in the thread for reducing the battery drain that happens while sleeping. Because of the holiday, over the past few days my MBP has been in sleep mode a lot. Seems like it loses way more battery than it should in sleep, so I wasn't able to get a good read on actual battery life while working on the first cycle after the Sierra reinstall. I'm pretty sure it was better than before the reinstall, but every time I put the computer to sleep it would lose a big chunk.
I can't see a downside to the fix that was suggested, so I'll do that now.
I'd love to hear reports from others that have reinstalled Sierra. What kind of real-world battery life are you getting now?
Also, has anyone tried the "battery drain while sleeping" fix? (i.e. sudo pmset -b standbydelay 3600)
P.S. I did not migrate data when I first set up my MBP, and reinstalling Sierra seems to have helped tremendously for me. So I'd suggest that anyone having battery issues do this, regardless of whether they migrated data.
That's way too high. What browser are you using? How many plug ins? What brightness?
Even with the old 13" model with larger battery you'd only be looking at ~3.75-6 hours of battery life max with that kind of power use.
There were different recommendations in that thread. 3600 was one, but someone else suggested 1200, which is 20 minutes. That seems reasonable to me.
Have a 15"tb - SMC reset and kill a few processes based on activity app... Great battery life. 3 hrs using (wifi web browsing) & it still shows 12 hours to go..
Too many negative comments almost made me cancel, but glad I didn't - you guys complaining should check activity monitor - CPU and see if you have anything that is using too much, in my case my IT dept pushed out a backup service that was not being used, but the service was running & using the highest utilization
Too many negative comments almost made me cancel, but glad I didn't - you guys complaining should check activity monitor - CPU and see if you have anything that is using too much, in my case my IT dept pushed out a backup service that was not being used, but the service was running & using the highest utilization
yeah @badlydrawnboy - I forgot to mention I used migration assistance & then re-installed Sierra over the top of the factory install.
I used 5 minutes (300 seconds) on my rMB as I reasoned that if I opened my laptop within that time frame I might have forgotten to do something and it might be nice to have it instantly on. Longer than that, I don't really care if it takes an extra second to open. I had to do this process over when I upgraded to Sierra. I can't recall how long the standby is by default but it seemed pretty excessive! Whether it is a coincidence or not, it does seem to improve the battery drain I have overnight.
That's unexpected that reinstall on a fresh OS would help. I might try it some point if my battery life starts deteriorating. So far so good though. Glad you fixed it.
I've read that with the new SSD speeds there will be minimal impact from hibernate. I'm going to do this if my sleep drain does not improve. Much bigger deal on previous MB's. but any SSD will still blow away a HDD.