Battery Life

The OnePlus 7 Pro comes with a 4000mAh battery with a standard nominal chemistry voltage of 3.85V which results in a capacity of 15.4Wh. It’s to be noted that this is the typical capacity of the battery while the rated capacity is 3880mAh / 14.93Wh.

We’ve seen from competing smartphones that what’s almost always more important than the actual battery capacity is the power efficiency of the components. We do expect the OP7Pro to have a higher power drain than competing smartphones due to the 90Hz screen, but the question is as to exactly how much more drain we’ll be seeing.

The battery testing results were done in the native 1440p resolution of the screen.

Web Browsing Battery Life 2016 (WiFi)

As mentioned before on the Display page, I had measured the device’s base power consumption with some conflicting numbers depending on methodology. One set pointed out the OP7Pro had quite large power drain, while the other set pointed out it’s almost as good as the Galaxy S10’s. The actual battery longevity results should shed more light onto this:

As I had anticipated, the OnePlus 7 Pro’s battery results veer more towards the higher power drain figures. In our web browsing test the OnePlus 7 Pro achieves good results, although it’s not able to keep up with the competition this year nor with the OnePlus 6T from last year.

Here it seems the phone does indeed have quite high base power consumption figures around the 550mW mark and the 100mW difference between 60Hz and 90Hz modes seems to be correct.

PCMark Work 2.0 - Battery Life

In PCMark, the 7Pro comes with good to great results depending on whether we’re using the 60 or 90Hz modes. I only had limited time with the device so I couldn’t also do the 1080p resolution battery life tests, and frankly I believe they’re not very relevant to the majority of users as there’s not much reason to use that mode.

In PCMark the 60Hz to 90Hz battery delta is slightly more pronounced than what we saw in the web browsing test, and this might be simply because the device is doing more computational work.

Overall, the OnePlus 7 Pro’s battery life is good, although it’s clearly not the best out there.

For me personally I use my phones a lot more in the evening and tend to use dark mode in the OS and apps. Under such scenarios the effect of a phone’s base power consumption will be more amplified as it represents a larger % share of the total consumed energy – and in this case the OP7Pro will give a noticeably worse result than say Samsung’s current generation.

Still, this is seemingly the first high-refresh-rate phone on the market that has completely useable battery life without any major handicap, all thanks to OnePlus’s optimal hardware implementation of the 90Hz refresh rate. In general if you’re buying the phone, you’re buying it for the 90Hz mode, and it makes very little sense to pay attention to either the 1080p or even 60Hz modes that the phone gives you.

A Word About 30W Charging

The OnePlus 7 Pro comes with a 30W charger. Here OnePlus is opting for a high current charging standard that goes up to 6A at 5V. The benefit of using a lower voltage and high current standard is that the phone’s PMIC will have a higher conversion efficiency when transforming the voltage down to the 4.4-4.5V cell battery charging voltage, reducing phone heating.

I am still extremely sceptical about these high power charging standards as they will more quickly degrade your battery capacity over time. At 30W / 5A for a 4000mAh battery, this means a peak charging rate of 1.25C which is well above the commonly agreed peak rated limit of 1C. Personally I would not trust to use such a charger in other than urgent circumstances, and generally I’m a bit worried at the battery longevity aspect of things with the current industry’s trend of racing to ever higher charging rates as a means of product differentiation.

Besides that, it’s also relatively disappointing that the OP7Pro doesn’t support wireless charging, even though the phone is relatively thick and does have a glass back. OnePlus said that this is something they’ll be looking into for future products.

Display Measurement - A Great Screen Camera - Daylight Evaluation
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  • hadrons - Wednesday, June 19, 2019 - link

    Currently great camera is a huge factor for premium phones and one plus has not been up to the big players for a long time, but still somehow people rate this phone better than a pixel phone. Every other Android manufacturers either lag behind or totally behind security or software updates and one plus is one among them. On a daily end user level scale, one plus is only as fast as the SOC and the Android version in it. Price is the only factor that I find some advantage in buying one plus.
  • 1_rick - Wednesday, June 19, 2019 - link

    Not only that, but $670 for the base model (I'm only considering the Pro as you "can't get" the 7 in the US) is hardly a "flagship killer". That honor would more properly belong to something like the Xiaomi Mi Mix 3, at $470 on AliExpress.
  • MrSpadge - Wednesday, June 19, 2019 - link

    ... or the Mi9, starting at 400€ in Germany (equivalent to ~400$ in the US).
  • ilaicohen - Saturday, July 27, 2019 - link

    Wth guys you can just download the Gcam and there you go, a better camera. And just saying, the camera isn't as bad as everyone says. Actually, it's pretty great. And about the price, it's half the price of the iPhone XS Max (with tax) so yea. It's a flagship killer. So cut off the bullshyt and go get yourself a OnePlus 7 Pro.
  • badbanana - Tuesday, June 25, 2019 - link

    i don't get this "..should have a better camera" thing. most users can't even tell what "f/2.0 lens" mean. for me, as long as it takes a clear photo, without the shakes then it's a "better" camera.

    i've owned every Samsung (for once never got any software updates) flagship since the S3 came out and found that OnePlus gets software updates whenever it's available.
  • systemBuilder - Friday, July 19, 2019 - link

    I have a OnePlus 6T. The camera beats and iPhone 6S in dxomark. For me, that's "Good Enough". Freaking out over a compromise camera (cellphone cameras are ALWAYS compromise cameras) just shows that the reviewer has no perspective on life. I enjoy the on-screen fingerprint reader, the fantastic battery life, and the generous RAM & Flash Storage and the OLED screen, all at a great price.
  • johansyren - Tuesday, November 10, 2020 - link

    As someone who switched from a wireless charging phone to a OnePlus with insanely fast Dash charging, I genuinely prefer the later. I just don’t have to worry about charging my phone anymore. I’ve been on this phone for 1.5 years now and I’m still in awe every time I charge it because of it’s speed.
    I read about it at
    Most of the time I plug it in when I’m getting ready to head out and in 10 minutes it charges up to a point that I don’t need to worry about battery throughout the day. Wireless charging would be a nice bonus, but considering how slow it used to be comparatively, I’d still never actually use it.
  • Roy2002 - Wednesday, June 19, 2019 - link

    It is a great phone, wish it has better cameras.
  • XabanakFanatik - Wednesday, June 19, 2019 - link

    No mention of the terrible stuttering when the phone is in 90Hz mode and you play a 60FPS video? OnePlus claims the display's refresh rate is adaptive to the content yet it cannot smoothly "adapt" to play a 60FPS video.

    By far the biggest complaint I have with the phone - If I want to watch a 60FPS video without terrible stutter, I have to go to the options and switch the display to 60Hz mode before, then switch it back to 90Hz mode after.
  • Xinn3r - Wednesday, June 19, 2019 - link

    Now that's a deal breaker

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