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  1. smanmit2's Avatar
    I switched from macbook air after 7 years - was impressed by surface pro 4 form factor. I primarily use surface pro 4 for Manmit Excel, Chrome browsing, and most importantly microsoft outlook. Just through these three program, I never get more than 4-5 hours of battery on i5 8gb ram device.

    I updated the battery driver, changed from sleep to hibernate, and also turned off windows hello. Nothing is working - I don't understand microsoft claim of upt to 9 hours. Can you share your battery experience?
    11-10-2015 04:23 PM
  2. badMojo69's Avatar
    I was able to get 5.75 hours max out of mine with general web surfing and video viewing using battery saver. Yes it sucks. :)
    11-10-2015 05:11 PM
  3. GSOgymrat's Avatar
    General web surfing and watching videos with brightness set to 75% I am averaging about four hours.
    11-10-2015 05:14 PM
  4. smanmit2's Avatar
    Great so I am trying to find where is the 9-hour claim. I am really disappointed with battery life.
    11-10-2015 06:07 PM
  5. sundry's Avatar
    I'm getting almost 9hrs...in sleep mode. it just goes downhill from there,

    But if you work at Microsoft you get much better battery life, according to their tests, I guess because the atmosphere there is electric, But most likely it's just something in the cool aid they're drinking.
    11-10-2015 06:57 PM
  6. new_surfacepro4_user's Avatar
    I am confused. In reviews, I read that with video watching, the device could handle 8 hours. However, based on comments from users, it could handle about 4 hours not with continuous video watching. Could anybody please clarify?
    11-10-2015 07:16 PM
  7. smanmit2's Avatar
    Ask Microsoft to clarify and check whether their video test was done in paused video
    saintforlife and Delirious D like this.
    11-10-2015 09:06 PM
  8. ttsoldier's Avatar
    Batty life is disappointing. I'm happy with mine though.

    I'm sure things will be tweaked later on via a firmware update :)
    zkyevolved likes this.
    11-10-2015 09:29 PM
  9. Michael Muscat's Avatar
    If you use the Surface like a laptop, you will get up to 6 hours usage. If you use it like a tablet, you will get up to 9 hours. Microsoft's claim of 9 hours is based on continuous video playback at 50% brightness.

    If you are using Chrome, Outlook, Excel at the same time at 75% brightness, you will kill the battery. Take comfort knowing the SP4 has better battery life than the 12" Macbook and adjust your usage accordingly.
    11-11-2015 06:51 AM
  10. mtalinm's Avatar
    Panos Panay routinely lies and exaggerates the capabilities of the Surface products. I have always experienced about 2/3 of the battery life he claimed...at best.

    You may know that the SP4 battery is smaller (!) than the SP3 battery. Anandtech found that it lasted about a half hour less. For the life of me I can't figure out why they didn't just leave it a little larger/thicker and keep similar battery life. Because marketing, I suspect.

    A few tips:
    1. screen is a huge drain, so turn the brightness down as far as you can stand.
    2. create a new power plan where the CPU is throttled down to 70% or even 50% when on battery (not when plugged in, obviously). this can make a real difference. search for "disable connected standby"
    3. set your power button to hibernate the device so you won't lose juice while sleeping. also uncheck stay-connected-to-the-internet-while-sleeping button in Settings.
    11-11-2015 07:20 AM
  11. ioaniro's Avatar
    You may know that the SP4 battery is smaller (!) than the SP3 battery. Anandtech found that it lasted about a half hour less. For the life of me I can't figure out why they didn't just leave it a little larger/thicker and keep similar battery life. Because marketing, I suspect.
    well that's not entirely true, anandtech found half an hour less for web browsing, 1h30 more for video playback and more for light&heavy load too. But that said the battery is smaller than the SP3. The processor seems more efficient in some scenarios, maybe with better drivers/Win10 updates it could improve. But i do agree, they should always increase the battery size! Especially as I never read as a criticism to the SP3 too thick...
    11-11-2015 10:11 AM
  12. bugelrex's Avatar
    Would love to see if the threshold update improves the battery.
    11-11-2015 11:39 AM
  13. GatsbyGlen's Avatar
    Is the PixelSense display similar to an IPS panel, meaning having a solid backlight? Or is it similar to OLED, with each pixel being an OLED. Wondering if using darker backgrounds would help save battery, but it probably won't if it's a solid back light. I'm guessing it is since I see back light bleeding through the bottom of the display.
    11-11-2015 11:52 AM
  14. smanmit2's Avatar
    Panos Panay routinely lies and exaggerates the capabilities of the Surface products. I have always experienced about 2/3 of the battery life he claimed...at best.

    You may know that the SP4 battery is smaller (!) than the SP3 battery. Anandtech found that it lasted about a half hour less. For the life of me I can't figure out why they didn't just leave it a little larger/thicker and keep similar battery life. Because marketing, I suspect.

    A few tips:
    1. screen is a huge drain, so turn the brightness down as far as you can stand.
    2. create a new power plan where the CPU is throttled down to 70% or even 50% when on battery (not when plugged in, obviously). this can make a real difference. search for "disable connected standby"
    3. set your power button to hibernate the device so you won't lose juice while sleeping. also uncheck stay-connected-to-the-internet-while-sleeping button in Settings.
    Tried all those tricks. Cannot reach even 5 hours with Excel and outlook. A $1300 tablet that cannot last more than 4.5 hours on just two application- seriously?
    CygnusOrion likes this.
    11-11-2015 02:54 PM
  15. snakebitten's Avatar
    I read somewhere the new Skylake processors have more potential for battery life doing their own "throttling", than having that throttling handled by the OS\software. I think the article went on to predict that W10 would have future updates to support this new method.

    Regardless, I still can't figure out how ANYTHING that thin, that brilliant of a display, with all that technology stuffed into it, can even last 4 hours unconnected from a power source. If I was in the marketing department I would take the opposite approach and actually state the FACTS:
    If you want 9 hours out of your portable computer, then you want less computer than this amazing Surface Pro 4. This is not your bosses laptop. :)
    Last edited by snakebitten; 11-11-2015 at 03:40 PM.
    ttsoldier likes this.
    11-11-2015 02:57 PM
  16. sundry's Avatar
    I read somewhere the new Skylake processors have more potential for battery life doing their own "throttling", than having that throttling handled by the OS\software. I think the article went on to predict that W10 would have future updates to support this new method.

    Regardless, I still can't figure out how ANYTHING that thin, that brilliant of a display, with all that technology stuffed into it, can even last 4 hours unconnected from a power source. If I was in the marketing department I would take the opposite approach and actually state the FACTS:
    If you want 9 hours out of your portable computer, then you want less computer than this amazing Surface Pro 4. This is not your bosses laptop. :)
    i agree. It is a killer product, even with 4.5 hrs of battery life. Good luck in getting a job in marketing with that attitude though. lol
    11-11-2015 04:22 PM
  17. ttsoldier's Avatar
    I read somewhere the new Skylake processors have more potential for battery life doing their own "throttling", than having that throttling handled by the OS\software. I think the article went on to predict that W10 would have future updates to support this new method.

    Regardless, I still can't figure out how ANYTHING that thin, that brilliant of a display, with all that technology stuffed into it, can even last 4 hours unconnected from a power source. If I was in the marketing department I would take the opposite approach and actually state the FACTS:
    If you want 9 hours out of your portable computer, then you want less computer than this amazing Surface Pro 4. This is not your bosses laptop. :)
    Exctly what I have been saying!!

    Like. What are people expect?! You have a device with bleeding edge technology... Intels 6th gen processor...

    You know if Microsoft made the device bigger to allow for a bigger battery.. People would complain.

    No matter what, people will never be satisfied.

    Me? I'm happy with my sp4 and it's battery life.
    11-11-2015 05:41 PM
  18. badMojo69's Avatar
    They should not advertise 9 hours of use when it can't be done under normal use cases.
    4.5 hours is BS.

    AND that's all I have to say about that.
    tboy2000 likes this.
    11-11-2015 05:51 PM
  19. wasabiman123's Avatar
    So I don't get it, did they regress on battery life from SP3??? I honestly haven't been keeping track of exactly my SP3 i5 lasts on W8.1 but it's pretty good...
    11-11-2015 07:20 PM
  20. snakebitten's Avatar
    I agree that they shouldn't advertise 9 hours if it takes non-typical use to achieve that.
    I look at advertised battery life like EPA estimates for fuel mileage on new vehicles. It may be possible, but not likely for most.

    And similar to mileage estimates, most folks aren't too offended at coming up short, but some feel strongly that it is wrong to make sloppy claims.
    I do feel it would be awesome if we lived in an honest world where advertising was legit. But at 57 years old, I just know better now.

    Having said all that, I've followed the advice of the chap in this thread and an article by WC for tweaking the "Power Plan" and I am very satisfied with the battery life I am now getting. And it is getting better every day. I'm expecting even more improvement as Intel and Microsoft optimize this new Skylake.

    But nothing is going to stop that awesome display from drawing what it needs to stun my eyes. Just physics.
    11-11-2015 07:21 PM
  21. Hardcore1973's Avatar
    9 Hours of battery life is probably screen set to 30%, battery saver on, Airplane mode, etc. Why does everyone think when ANY company says 9 or 15 hours of battery life they think streaming Netflix (Huge battery drain from pulling data and the app), or playing a game (taxes out the CPU), or having brightness on 70% (thats around 300 nits which is 100% brightness on most laptops. 9 Hours has always been around 5-6 hours of real work, 15 hours has always been around 8-10 hours of real work. Notice the new Dell XPS 13 says 11 hours now instead of the claimed 18 hours of battery life lol. Tell all manufacturers to run the exact same test using the exact same brightness, wifi, bluetooth, brightness (controlled), and anything else that draws power. Otherwise it's all BS isn't it? Since I have owned every Surface and Surface Pro I knew exactly what it was going to do. But since I have owned thousands of laptops I know pretty much what all of them will do based on battery capacity, screen brightness and technology used, power consumption of the processor, RAM, etc..
    vezycash likes this.
    11-11-2015 07:50 PM
  22. ttsoldier's Avatar
    I don't know how you guys have the screen so bright.I have mine at 25% when on battery. That's bright enough for me! Plugged in it goes up to like 60 or something. Don't remember.

    One mans trash is another mans treasure. I love my Battery life.
    11-11-2015 08:21 PM
  23. snakebitten's Avatar
    Admittedly, the office, data center, and bedroom are all low light environments. And it's true, I have curiously touched the 25.50.75.100 cycle a few times just to reassure myself. But 25 gets the nod most of the time. Numerically it just seems wrong for that screen to be so wonderful. But for me, 50 is BRIGHT. 75-100 is for the beach.
    11-11-2015 08:29 PM
  24. polbit's Avatar
    I get 6 - 8 hours, using Chrome Canary, MS Office, Visual Studio 2015 and sometimes Spotify, etc. Screen at auto, power saver kicks in at 20%. No it's not awesome, but it's definitely better than 4.5 hours people are saying. My fan also is silent, unless I'm really pushing it...
    11-11-2015 08:39 PM
  25. smanmit2's Avatar
    Exctly what I have been saying!!

    Like. What are people expect?! You have a device with bleeding edge technology... Intels 6th gen processor...

    You know if Microsoft made the device bigger to allow for a bigger battery.. People would complain.

    No matter what, people will never be satisfied.

    Me? I'm happy with my sp4 and it's battery life.
    I don't understand your response. One buys a product considering the value and offering claimed by the seller. It is not about how much I should expect but more about delivering the claim. If Microsoft would have been honest about battery life, I have no issues. But selling the product for 9 hours and then getting half of it has nothing to do with satisfaction. I don't want to even start the conversation on what other tablets are offering and how they are able to give 8 plus hours of battery life.
    Rattso2005 and DDCosta like this.
    11-11-2015 09:24 PM
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