Battery Life

The OnePlus 2 had many problems, but something you could generally count on was that it provided good battery life. Unfortunately, the caveat was that the phone usually ran on four Cortex A53 cores so it performed only a bit better at CPU tasks than a $100 Moto E LTE, but that's another story. With the OnePlus 3 you no longer have to deal with exceptionally poor performance, and with the battery being made smaller at the same time as OnePlus moves from an LCD to an AMOLED display it's difficult to say what happens to battery life in the process. To evaluate the OnePlus 3's battery life under various scenarios I've run our 2016 WiFi web browsing battery test, PCMark's battery test, and GFXBench's Manhattan 3.1 battery test.

Web Browsing Battery Life 2016 (WiFi)

The OnePlus 3 regresses slightly from the OnePlus 2 in our web browsing battery test. However, it's also worth noting that the OnePlus 2 had crippled web performance by only enabling the SoC's A53 cores, and with the OnePlus 3 being over twice as fast with JavaScript performance it's worth the tiny hit to battery life. Looking at the broader market you can see that the OnePlus lasts slightly longer than the Nexus 6P, but trails the Galaxy Note5 by about the same amount.

In my own usage I haven't noticed any problems with web battery life on the OnePlus 3. OnePlus definitely could have put in a larger battery, but it would have made the phone thicker and heavier which would have a negative impact on its ergonomics and usability. The OnePlus 2 basically feels like a brick in the hand, and all you get for it is an extra 300mAh over the OnePlus 3. The OnePlus 3 much nicer to hold in the hand, and the idea that you should compromise that by making it 3mm thicker and 30g heavier just to boost the battery capacity by 10-15% is ridiculous.

For those who are interested, I measured 6.47 hours when running this test over LTE. I've decided not to compare this result directly to our past reviews because I'm still unable to achieve a strong enough signal over LTE to get results that are comparable to those run by Josh and Matt, but the drop in battery life when running over LTE was only about thirty minutes which is a great result for -97dBm on LTE.

PCMark - Work Battery Life

In PCMark's battery test the OnePlus 3 continues to do quite well. As I showed in the performance section, the OnePlus 3 improved over the OnePlus 2 a great deal in PCMark's tests, and yet it also lasts longer in a battery benchmark running those same tests. PCMark's battery test is a good indicator of what battery life you can expect when performing a variety of different tasks that stress different parts of the system, and the fact that the OnePlus 3 only loses to the larger Galaxy Note5 and Huawei Mate 8 speaks very well of its battery life.

GFXBench Manhattan 3.1 / Metal Battery Life

GFXBench Manhattan 3.1 / Metal Final Frame Rate

The OnePlus 3 does exceptionally well in our GFXBench Manhattan battery test. While it's by no means a leader in terms of absolute battery life, the performance it achieves is impressive to say the least. It's important to note that this is an on screen test, and so while the OnePlus 3 is a bit behind the iPhone 6s for sustained performance, it's also pushing a much higher resolution. The fact that the phone maintains its frame rate for over two hours is also an improvement over pretty much every other Android device, with the LG G5 coming close but exhibiting small oscillations that the OnePlus 3 doesn't have. Suffice to say, the OnePlus 3 provides a substantial improvement over the OnePlus 2 here, and I think anyone would agree that it's more fun to play a game at 30fps for two hours than to play it at 7fps for three.

In the end, the OnePlus 3 generally does as well or better than its predecessor in our battery life tests when you consider their context. In our 2016 web test battery life has dropped a bit, but it's not a significant decrease even though performance has improved immensely. PCMark battery life improves, and that's a test that reflects real world usage quite well. In GFXBench it doesn't last as long, but sustained performance is three times as high, and the frame rate the phone can maintain is high enough that a game with the visual fidelity of the Manhattan benchmark would actually be playable at 1080p on the OnePlus 3.

Charge Time

One of the biggest controversies regarding the OnePlus 2 was the lack of support for quick charging. OnePlus actually included a 10W charger so it wasn't as though you were limited to 5W speeds, but nonetheless you weren't able to take advantage of chargers that supported Qualcomm's Quick Charge protocol. The OnePlus 2 and the OnePlus 3 both use USB Type-C connectors, but there's no support for USB Power Delivery. With the OnePlus 3 there's now support for quick charging, but in an unconventional way.

The OnePlus 3 introduces a new standard for quick charging that was created by OnePlus, which they call Dash Charge. According to OnePlus, Dash Charge moves much of the power management processes to the charger itself rather than the phone, which reduces the heat generated by a device as it charges. There isn't much technical information about what exactly is going on, but a reasonable guess is that the DC/DC voltage conversion is now going on at the charger instead of the device, which means the phone only has to handle the current limiting. Dash Charge also operates at 5 volts, and the included charger is a 5V 4A block for 20W of output power. It's worth noting that the USB Power Delivery implementations that we've seen operating at 15W also use 5 volts, so this isn't necessarily something unique to Dash Charge.

Of course, there is a caveat with OnePlus making their own protocol is that you're limited to their charging blocks.  On top of that, you're limited to using OnePlus's cords, with the charger not providing quick charging using other USB Type-C cables such as the Google-branded ones that I have. This is a significant drawback compared to Qualcomm Quick Charge and USB Power Delivery, although I would imagine most users will use the included charger and cable so it may not pose much of a problem in practice.

Charge Time

As a OnePlus-specific charging implementation, Dash Charge may not be as convenient as USB Power Delivery or Qualcomm Quick Charge, but it certainly charges the phone quickly. At 1.44 hours to go from 0 to 100% there's not really anything to complain about with the actual time to charge. 

While Dash Charge is interesting in how it charges quickly and actually does manage to keep the phone cool while doing so, I'm not really sure if it's worth the trade-offs. If you lose your OnePlus cable you have to buy a new one from OnePlus, and you can't quick charge with the large number of Qualcomm Quick Charge accessories available on the market. If nothing else, Quick Charging is here on a OnePlus device, but it has more restrictions than one might have hoped, and it's not clear if the benefits are worth it.

Camera Architecture and Performance Final Words
POST A COMMENT

176 Comments

View All Comments

  • Aritra Ghatak - Tuesday, June 21, 2016 - link

    What about the uncompleted Galaxy S7 review?? Reply
  • Aaight - Friday, June 24, 2016 - link

    So brandon, what's up with the s7 review, are you guys gonna release that this year? Or are we gonna have to wait for a unfinished s8 review? Reply
  • Aaight - Friday, June 24, 2016 - link

    I know you guys are pretty touchy about the s7 review, but deleting my comment? There's really no room for criticism? Even when you guys screwed up and are months late with the second half of the review? You guys just gonna wipe it under the rug and pretend it never happened? Really professional, you just lost the very last bit of respect I had for this site. Reply
  • Aaight - Friday, June 24, 2016 - link

    New to this comment system, thought you'd deleted my first comment. Sorry about the rant.. Reply
  • tom5 - Sunday, June 26, 2016 - link

    I'm waiting impatiently for the HTC 10 review - Part 2 :) Reply
  • S007009 - Monday, June 20, 2016 - link

    Could you plz explain why you have "time" for smartphone review after review
    without completing the promized Samsung S7/Edge review (yes the part-2 a lot of people seems to be waiting for) ?
    Reply
  • Anakha - Monday, June 20, 2016 - link

    Same goes for the HTC 10... Reply
  • antifocus - Monday, June 20, 2016 - link

    It is not like all their smartphone reviews are written by the same person... Reply
  • Ian Cutress - Monday, June 20, 2016 - link

    I know I keep saying the same thing each time this comes up, but our smartphone team is four different editors in different parts of the world (West coast, Canada, Europe, Central), and have different schedules (only one is full time).

    Your requests aren't falling on deaf ears, trust me. I'm pushing internally on this stuff too, as well as trying to catch up on my own promised articles on the CPU/motherboard side.
    Reply
  • TheinsanegamerN - Thursday, June 23, 2016 - link

    The s7 review is 3 MONTHS late. Tons of other sites have found time to finish reviews, yet anandtech cant? The late GPU reviews as well, are painting a very poor picture. Where are the 1080 and 1070 reviews? Or heck, what about that 960 review that never came out? Or that macbook pro 13 review that was promised and never came out?

    If you dont have enough people to fix this issue, hire more writers. Or hire full time writers and not part time ones. Or have the other sites assist with the reviews. This lame "oh our writers are part time, nothing we can do" excuse is rapidly wearing out its welcome.
    Reply

Log in

Don't have an account? Sign up now