Oppo Find X9 Pro sets a new benchmark for smartphone battery longevity

The device achieves this endurance through a silicon-carbon battery, a high-density cell architecture that packs 7,500mAh into an 8.25mm frame. This configuration is thinner than the iPhone 17 Pro while offering nearly twice the capacity. During testing, even with power-intensive features like the always-on display engaged, the phone maintained operation for over 50 hours before reaching low-battery thresholds.

Oppo is at the forefront of a shifting industry standard, joining a wave of manufacturers integrating batteries exceeding 7,000mAh. Devices such as the Xiaomi 17 Pro Max, the 7,300mAh OnePlus 15, and the 7,200mAh Honor Magic 8 Pro suggest that consumer expectations for smartphone longevity are poised for a significant reset. Despite its performance, the Find X9 Pro faces hurdles, including a premium price tag of £1,099 and a lack of official availability in the United States.