While fans may quibble over the various drawbacks to this year’s OnePlus 15, one of the phone’s biggest claims to fame is its humongous 7,300mAh silicon-carbon-based (Si-C) battery. Its sibling phone, the OPPO Find X9 Pro, boasts an even larger 7,500mAh cell, making them two of the largest battery capacities available on global markets.
For comparison, the Apple iPhone 17 Pro Max features a 5,080mAh cell, the Google Pixel 10 Pro XL offers 5,200mAh, and the Samsung Galaxy S25 Ultra boasts around 5,000mAh. Those were considered very robust capacities just a few months ago, despite being slightly smaller than the first-wave of 6,000mAh Si-C batteries. However, they are now eclipsed by nearly 50% compared to the second wave of Si-C-equipped smartphones.
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