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2016 macbook pro 15" with touch bar poor battery life

I just received my new 15" MacBook Pro with touch bar. The battery life is horrible!!! I have Safari open with 6 tabs and with 95% battery, I am told that I have under 3 hours of battery life left! I thought these things were supposed to get 10 hours? I ran the battery down in 3 hours last night only browsing the web. I wasn't watching videos, just browsing. Is there something wrong with my laptop?

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MacBook Pro with Retina display, macOS Sierra (10.12.1), 15" with touch bar

Posted on Nov 20, 2016 10:07 AM

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Question marked as Top-ranking reply

Posted on Mar 5, 2017 11:31 AM

Hey everyone,


Received a new MacBook Pro with Touch Bar 15" as well, and like several of you, was shocked by the short battery life, even with the software updates. After some extensive trial and error, I have remedied my battery woes! Sharing out in case it helps any of you.


The largest change in my case was as some suggested, an SMC reset AND a NVRAM Reset. After doing both, my time remaining shot from 3-4 hours to 9-10 hours and even longer with further tweaks. I was shocked, but was able to verify the change based on using the Battery Guru app. The Milliamp output has been cut nearly in half to ~600 and the machine is significantly cooler during light usage. See below.


A little background:

  • As mentioned, my average was 3-4 hours with light usage. This was playing Spotify, writing emails, and surfing Safari only.
  • I have been using Fruitjuice and Battery Guru to monitor and verify usage time and energy output. Both put the machine at roughly 3-4 hours of battery time and on BG, I had an average ~1100 Milliamp output.
  • Assuming the higher output was the screen, kept brightness to 75% and reduced keyboard lighting to its lowest setting.
  • Confirmed Spotlight, Photos and iCloud had finished indexing before making a judgement.
  • Even after all of the above, still 3-4 hours.


But then: I noticed something was amiss when charging the device. The last time I did so, I found the machine running hot and I noticed the fan was going nuts. That lead to the SMC and NVRam reset. After doing so, voila! 9-10+ hours of battery life!


But not only that, I've been able to extend the battery even more so, doing some additional suggestions that the forums have suggested.:


  • Revisited my startup apps in Login Items and removed things like Skype for Business, Adobe Creative Cloud and several update checkers. Though several of these were negligible, some suggested S4B and Adobe may be eating up more resources and some have reported improvements.
  • Due to the recharge incident, I decided to disable Power Nap while on battery. I'm going to see if I run into the issue again while Power Nap is on charge, will report if it occurs again.
  • Download Turbo Boost Switcher to disable Turbo Boost. I found this adds around an hour of battery life back and the milliamp output can drop around 400 during light usage. Performance doesn't seem to be affected when doing light usage. I turn it back on when I'm working on more intensive applications or plugged in.
  • I keep my keyboard lighting low and brightness around 75%.


Anyway, that's been my experience, and I'm now very happy with the machine and thrilled that I don't feel the battery anxiety I once had. It would seem that there is something glitchy in either the hardware and software still, but hopefully it's just a SMC/NVRAM reset fix for many.


Good luck out there.

G

540 replies

Dec 11, 2016 2:47 AM in response to cab5g

My battery gives a little more then 8 hrs fully charged, but drops in just 15 minutes to about 5 hrs, only websurfing, so that wil be the more accurate estimate. Worse: when it is around 42 procent it starts draining like crazy (see screenshot), reaches 0% in about 45 minutes, then shuts down. Meanwhile the backside of the computer gets incredibly hot, so hot you can't keep it on your lap.

(In the screenshot it says the battery remained 12 hours, bull, in total it was not even 5. Although that's more then most of you seem to get, it's still way to little for a laptop that cost me 2.600 euros).

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Dec 11, 2016 8:16 AM in response to faythebest

I am also having an issue with Battery capacity. I am interested in checking some information with the people on this thread. What is your AC Charger outputting for power? It is suppose to be a 87 Watt Output but I am not seeing anything over 60W; and I have 3 to 4 hours of capacity.


Would you kind people share your output Wattage and if your battery is suffering low capacity or normal capacity please? You can find it by plugging in your MacBook Pro with the AC Charger and then going to 'About this Mac' > System Report > Power > AC Charger Information (Scroll to the bottom) > Wattage.


Thank you.

Dec 11, 2016 9:30 AM in response to Csound1

Thank you for the reply Csound1;


I understand but I would think that if the CPU/GPU were under heavy loads and the battery was charging I would expect to see close to 87 Watts output. I am seeing 60W max under heavy loads and I am also seeing the Battery Discharge (down to 4% before throttling back the CPU) under this condition over a few hours. However a friend of mine had this issue and it suddenly resolved, his AC Charger is outputting 85 Watts during the initial charge cycle, (as expected).


The AC Charger has a max output of 20.2V and 4.3 Amps making 86.86 Watts, (87 Watts). CPU/GPU loads aside, a depleted battery will consume higher loads for the initial 80% of the charge under Constant Current Mode before switching to Constant Voltage Mode in the last 20% of the charge cycle. The system reports the battery C at 6.774 Amp Hours (the Full Charge Capacity in mAh); so these batteries should be able to be charged at 1C or 6.774 Amps, well outside of the AC Charger's ability. So if a battery were depleted below 80% of the charge, (in the Constant Current range), the AC Adapter should be running full tilt to charge the battery; and then slow down for the last 20% of the charge (the constant voltage range).


Under Battery conditions I am seeing an average load of 1 to 2 Amps, (0.75 an amp with the screen very low, and the BT and WiFi off). Being very conservative a Battery Charge cycle of 0.3C or 2 Amps and a running system in the 1 1/2 Amp range would be about 70 Watts; well over the 60W I seem to be capped at.


My point is under a full CPU/GPU load and during the first 80% of the charge cycle the AC Charger should be outputting well over 60W. Wouldn't you agree?


Don't the 13 inch models use 60W with smaller batteries?


Thank you.

Dec 11, 2016 9:54 AM in response to Csound1

Here is a screen shot to show what I am trying to describe; Notice that once I start putting the MacBook under a heavy load the system has to start drawing from the Battery to keep up, (1.148 Amps of battery draw), while the AC Charger is still showing 60W of power output.


I am not convinced that either the onboard Charging Circuit or the AC Charger is working as intended.


Thank you for your time.

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Dec 11, 2016 12:13 PM in response to Art M.

Thank you Art M. for the reply.


At the time of my order I ordered an extra AC Charger and an extra Apple Charge Cable (2M). Both AC Chargers have the same Hardware Version and Firmware Versions. I have tried all combination of the AC Chargers and the Apple Charge Cables with the same results; 60W maximum output.


I have also tried the Apple supplied Belkin Thnderbolt 3 Cable (0.5M).


Are you seeing 87W output from your charger and are you experiencing low Battery Life?


Thank you for the suggestion.

Dec 11, 2016 12:38 PM in response to cab5g

I just took delivery of my new 13" rMBP with Touch Bar a few days ago. Thus far, I'm consistently getting 6 hours (or less) on a full charge with very light use. I did a video only test (two movies playing on repeat) yesterday, trying my best to replicate the settings that Apple list on their own product marketing pages, and I got 5.5 hours vs. "up to 10 hours".


Hopefully, this will be remedied with a software/firmware update very soon.


I'm running the latest beta build of 10.12.2.

2016 macbook pro 15" with touch bar poor battery life

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