The ASUS Zenfone 3 Ultra is a monster smartphone, not just in size, but also in battery. At 4,600mAh, it also has the largest battery capacity compared to the rest of the Zenfone 3 devices. We have tested its longevity using the PC Mark benchmark app and compared to the rest in our database. Check out its ranking below.


Looking at the results, the Zenfone 3 Ultra was rated at 12 hours and 2 minutes – above the Elephone P8000, but below the ASUS Zenfone 2 Laser ZE550KL. It also performed below it’s smaller siblings namely the Zenfone 3 ZE552KL (3,000mAh – 13 hours, 46 minutes) and ZE520KL (2,600mAh – 12 hours, 49 minutes), but it’s understandable considering that the ZF3 Ultra sports a significantly larger 6.8-inch display.
Compared to popular offerings in the market, it performed better than the Galaxy Note7 (3,500mAh – 10 hours, 24 minutes) and Xiaomi Redmi Pro (4,050mAh – 9 hours, 7 minutes).

It’s also worth noting that Zenfone devices dominates our top 10 rankings with the Zenfone Ultra placing 9th.
For the complete PC Mark Battery Rankings, check out our article here.

android 7 (nougat) has this feature: lower the screen resolution to conserve battery.
i wonder if asus plans to offer android 7 update to its phone and tablet lineup.
also, if possible, can yugatech do battery tests for android 5, android 6, and android 7 devices? i want to know if there is a significant real world difference android 7 devices offer over their old android OS counterparts…