Battery Life

Battery life of the OnePlus 8 Pro was a big question-mark for a lot of users given the phone’s 120Hz refresh rate. Several weeks ago I had reported on my initial power draw investigation results covering the different display modes of the screen:

Much like on the Galaxy S20 series, the OnePlus 8 Pro incurs a large static power draw penalty when switching from 60Hz to 120Hz. This is a increase in the baseline power of the phone, no matter the type of content that you’re displaying, and will even incur on a pure black screen.

OnePlus 8 Pro Baseline Power usage (Black Screen)

Whilst OnePlus does include refresh rate switching mechanisms based on scenarios such as video playback, the lack of a true variable refresh rate (VRR) mechanism that works on the per-frame basis and is implemented on the deeper OS and GPU driver levels, means that current generation high-refresh rate devices will have to suffer from a larger than usual power and battery life penalty.

Web Browsing Battery Life 2016 (WiFi)

In our web browsing test, we see the clear impact of the 120Hz refresh rate on the OnePlus 8 Pro as it reduces the battery life of the phone in the test by 22% compared to its regular 60Hz mode. As a note- we’re testing at QHD resolution here as generally there’s very little power benefit from using lower resolutions.

In terms of absolute results, the 9.71h of the 120Hz mode here are adequate but not great. The results fall in line with the S20+ at 120Hz, but short of the bigger battery capacity of the S20 Ultra. At 60Hz, the 8 Pro moves back in at 12.31h which is a great result and will get you through even the most extensive usage days.

Whilst many will have looked forward to the OnePlus 8 Pro results, the really interesting results belong to the smaller OnePlus 8. The phone here was able to showcase outstanding battery life figures. The 90Hz mode only has an 8% impact on the battery runtime in this test, and in the 60Hz mode the phone lasted for a staggering 14h which is amongst the best results we’ve ever measured on a phone.

PCMark Work 2.0 - Battery Life

In PCMark, the smaller OnePlus 8 again takes the lead in terms of longevity with its 60Hz mode. The 8 Pro also does quite well at 60Hz, and both phones lose respectively 15.4% and 16.4% of their runtime when switching over to 90Hz and 120Hz modes.

Whilst the OnePlus 8 Pro pretty much fell in line with what we’ve expected in terms of its battery life, falling in line with the 120Hz power behaviour of the S20 phones, it’s the regular OnePlus 8 which surprised a lot given that it features a slightly smaller battery, notably surpassing the efficiency of the OnePlus 8 Pro. Given its form-factor and weight, it’s easily the longest-lasting device of its class, with only other heavier, bigger battery phones being comparable in terms of battery longevity.

Display Measurement Camera Recap - Amongst The Best


View All Comments

  • liquid_c - Tuesday, June 30, 2020 - link

    You call others “sheep” while you, yourself ask that Apple make their own displays, rather than relying on Samsung. Which is retarded. Reply
  • quijeros - Monday, June 29, 2020 - link

    After using a Samsung flagship for the past two years, I absolutely refuse to consider any phone that has a curved screen. Reply
  • drajitshnew - Monday, June 29, 2020 - link

    Absolutely agree. Maintainance and protection are an absolute nightmare. Hopefully the new note 20 will ditch the curved screens in at least some models. Reply
  • Daro - Tuesday, June 30, 2020 - link

    Amen Reply
  • s.yu - Wednesday, July 1, 2020 - link

    Sony FTW? Reply
  • Kishoreshack - Monday, June 29, 2020 - link

    This phone is even better than the s20 line & way cheaper than them
    This phone is the pioneer of android os at this moment
    The android experience is top notch 👌
    One plus has done an excellent job
    Hope Samsung takes cues from one plus
    Many manufacturers need to learn from one plus
    How pure android skin shines
  • superflex - Monday, June 29, 2020 - link

    Hope you're getting paid to post this promotion of another Chinesium phone with CCP spyware built in the back door.
    Now get back to cleaning toilets and learning English as a second language.
    Blatant troll
  • ralphwiggum1 - Monday, June 29, 2020 - link

    Uhh, but OnePlus is a leader in Android software support. They have a proven history of supporting their devices years later, even longer than Google, plus, they seem to participate in Android betas, though this year it looks delayed. Once Android 11 beta expands beyond Pixel, OnePlus will be there. This may be the benefits of releasing only 2-3 phones a year. Samsung is objectively bad at software, they have unique features, but they are also slow to resolve issues/bugs in those features. And having either the carrier variant or unlocked from Samsung, updates are a scattered mess. Reply
  • Daro - Tuesday, June 30, 2020 - link

    Chinese spy, USA spy, Israel spy...whatever. All phones are compromised. Reply
  • Retycint - Thursday, July 2, 2020 - link

    Personal attacks instead of listing rational points just make you look pathetic Reply

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