Battery Life

There are multiple ways to achieve great battery life. Looking back at the Surface Book, Microsoft crammed in a lot of battery capacity – 85 Wh – in the tablet and base. But ultimately, efficiency matters as well. The Surface Laptop Studio has just a 56 Wh battery, which is tiny in comparison. So, keeping up the their battery life comes down to efficiency.

To see how the Surface Laptop Studio performs, it was run through our laptop battery suite. As always, the display is set to 200 nits brightness to make it an even playing field, and for clarity, the Surface Laptop Studio was left in its default 120 Hz display mode.

Web Battery

Battery Life 2016 - Web

Our web workload is fairly demanding, but the Surface Laptop Studio performed very well achieving just over 11.5 hours of runtime. Likely thanks to the slightly lower resolution display, it managed to achieve longer runtime than the outgoing Surface Book 3, despite having a much smaller battery.

Battery Life 2016 - Web - Normalized

Looking at the normalized results, which remove the battery size from the equation, and the Surface Laptop Studio really shines. Despite the higher-powered CPU and dGPU, it is still one of the most efficient devices around.

PCMark 10 Modern Office Battery

PCMark 10 Modern Office Battery

PCMark’s Modern Office battery test utilizes their office benchmarks, and runs them in ten minute loops. If the device completes the test sooner, it is allowed to idle for a longer portion of the ten minute loop. Again, despite the smaller battery capacity, the new Surface Laptop Studio outperforms its predecessor, the Surface Book 3. Again, an impressive result

Movie Playback

Battery Life Movie Playback

Media playback is always a common use case for notebooks, and it is generally one of the least demanding activities since the media decode is offloaded to the video decoder in the GPU, which in this case will be the Intel integrated graphics.

Intel’s integrated GPU continues to be very impressively efficient with video decode, and the Surface Laptop Studio achieved over 13 hours in this test.

Battery Life Tesseract

Our tesseract result divides the movie runtime by the length of The Avengers, which lets you know how many times you could play back the movie before needing to get the AC adapter.

Unless you have the worlds longest flight, being able to watch The Avengers five times in a row should likely be plenty for most people.

Charge Time

The Surface Laptop Studio’s 56 Wh battery is charged via the Surface Connect port on the right side of the device, which as always, offers a magnetic connection. If you opt for the model without the NVIDIA GPU, the AC Adapter is a 65-Watt unit with a 5-Watt Type-A charging port integrated. The Core i7 model, with the NVIDIA GPU, bumps that up to a 102-Watt output, with 7-Watts dedicated to the Type-A port. I’ve mentioned this already, but how great would it be if the Type-A port was also connected to the device, and I am a bit surprised Microsoft has never done this. Now that there are no Type-A ports, it would at least allow a Type-A device to be connected in a pinch.

The review unit is the Core i7 model, and therefore comes with the larger AC Adapter. Thankfully, unlike the Surface Book 2, there was never a moment where the CPU and GPU combined would draw more than the adapter could output. Microsoft apparently learned their lesson.

Microsoft claims 80% of the battery can be recovered in one hour, so let’s see how they fare.

Battery Charge Time

In our log of the charge rate, they did indeed hit almost exactly 80% in one hour; technically coming in a minute before to be precise. A full charge takes just about two hours, as the laptop throttles the charge rate to protect the battery.

Microsoft also offers some Smart Charging options in the Surface app, which allows you to lower the charge limit to increase the longevity of the battery. This is greatly appreciated but would be even better if it was just included in Windows itself.

Display Analysis Wireless, Audio, Thermals, and Software
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  • nico_mach - Wednesday, October 6, 2021 - link

    I don't think you'll get a clear statement from MS. That said, they indicated that this is the successor, so I wouldn't count on another Book release.

    And, yes, that is all they said, there is no definitive 'The Book is dead' statement anywhere.
  • Daeros - Tuesday, October 5, 2021 - link

    Just curious as to why no comparisons were made to other ‘H’ sku offerings from Intel and AMD, or the Apple M1.

    It seems like a no-brainer that a CPU with >2x thermal dissipation and external GPU is faster than the ~15w platforms in this review.
  • Brett Howse - Tuesday, October 5, 2021 - link

    Hi Daeros. I've not been sampled the Apple M1 in a laptop so it is not in our database.

    Most of the "H" series we've tested are bigger gaming systems with much larger GPUs. This is called an H35 but really it's more of a U-series with some headroom.

    That being said, feel free to compare the Laptop Studio against any other device we've tested in our online Bench database here:
    https://www.anandtech.com/bench/product/2890
  • ingwe - Tuesday, October 5, 2021 - link

    So perhaps a stupid question: based on what I see from the battery life and charge time page, charging only happens through the Surface Connect port and not through Thunderbolt at all? Correct? If so, that is annoying as it means a normal Thunderbolt dock is next to worthless with this.
  • Brett Howse - Tuesday, October 5, 2021 - link

    The charger that comes with it is the normal Surface one but that doesn't mean you can't charge over the other ports.
  • rogantastic - Wednesday, October 6, 2021 - link

    I picked up my Surface Laptop Studio yesterday and confirmed you can charge with any standard PD charger over Type C on both ports, this is a requirement to be called "Thunderbolt" if less than 120 watts I believe (I could be wrong on the wattage number). I have a 65 Watt PD charger and it works GREAT.
  • ikjadoon - Tuesday, October 5, 2021 - link

    Excellent battery life for a 56 WHr 35W GPU + ~35W dGPU; these idles states are working well.

    And great to see, from the surface, a quite decent SSD (as I don't think SK Hynix makes QLC or DRAMless SSDs, do they?).

    But, *quite* disappointed to see not a single type-A port and a silly, selfish omission. Following Apple's worse trends: "$1600 MSRP system with a dGPU and not a single USB type-A port."

    //

    The oddities are those browser benchmarks.

    Either Windows 11, Edge, or some system timers are either beyond amazing or beyond borked. That 192 Speedometer 2.0 score for an i7-11370H (4.8 GHz Turbo) is 34% faster than AnandTech's CPU Bench all-time record of 143 by the i9-11900K (5.3 GHz Turbo).

    Also would've liked an M1 comparison at least for battery life or CPU performance, though the main seller here is the hinged touchscreen.
  • ikjadoon - Tuesday, October 5, 2021 - link

    * 35W CPU
    * Apple's worst
  • SirDragonClaw - Wednesday, October 6, 2021 - link

    No one needs a old usb type-a port these days. Leaving it on would be foolish.
  • alanh - Tuesday, October 5, 2021 - link

    I find it curious that you talk about the new "unique hinge design" and then neglect to include any detailed pics of the hinge on the "Design" page.

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