ⓘ Notebookcheck (Marcus Herbrich)
In our review, the Oppo Find X9s Pro masked an efficiency weakness with its huge battery, which is somewhat surprising given the Find X9 Pro’s test results. For an easy‑to‑handle and compact smartphone, the battery performance is in a completely different league compared to the Samsung Galaxy S26.
The power‑consumption figures in our idle measurements clearly expose the efficiency problem. While other top smartphones from Oppo, such as the Find X9 or even the significantly larger Find X9 Pro, remain below 2 watts in idle mode, the Find X9s Pro consumes noticeably more energy. Our Geekbench and GFXBench measurements, taken with the display brightness adjusted to 150 cd/m², clearly indicate the lack of optimization.
In idle mode, the Find X9s Pro consumes around 3 watts, more than three times as much power as the large flagship model, the Find X9 Pro, which is also powered on MediaTek’s Dimensity 9500.
However, the Find X9s Pro’s extra-large battery only partially conceals its inefficiency. In our web surfing battery test, the Oppo phone delivers a really good stamina for the compact smartphone class. Compared to the Samsung Galaxy S26, the Find X9s Pro lasts almost 10 hours longer.
However, due to the high power consumption at low system load, Oppo is giving away valuable screen‑on time that could have made the mini‑flagship a true endurance champion. Even the larger flagship model, the Find X9, with an identical battery capacity but larger OLED screen, lasted longer in our battery test.
All information and measurement data on the Find X9s Pro can be found in our review of the Oppo phone. Prices for the compact flagship start at around $940 from our loan partner Trading Shenzhen.
I have always been very passionately interested in mobile technologies, especially smartphones. Being a tech enthusiast means the half-life of my devices isn’t exactly long, and being the latest hardware is not enough to suffice as the manufacturer and operating system play a minor role – the most important aspect for me is that the device is state-of-the-art. After posting for Mobi Test I joined Notebookcheck in 2016, where I have been pursuing my enthusiasm for technology by reviewing the latest smartphone, tablet, and accessory trends.
Marcus Herbrich, 2026-06-10 (Update: 2026-10- 5)
