
Oppo Find X9 Ultra’s silicon-carbon battery outlasts iPhone 17 Pro Max in head-to-head test
In a side-by-side test, the Oppo Find X9 Ultra with a 7,050mAh silicon-carbon battery and up to 100W charging outlasts the iPhone 17 Pro Max, which has a roughly 4.8–5.1k mAh capacity, in real-world battery life and charging speed. Over three hours of 1080p YouTube playback, the iPhone stayed at 90% while the Find X9 Ultra finished at 94%; in charging tests, the iPhone reached 64% in 30 minutes (35% at 15 minutes) versus 74% in 30 minutes for the Oppo (44% at 15 minutes). The article suggests silicon-carbon tech is pushing ahead and could push Apple/Samsung to adapt, while noting Oppo’s larger battery and faster charge give it a tangible edge today.


