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I Tested the OnePlus 15 and Its Massive 7,300-mAh Battery Deserves a Medal

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CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise.

8.5 / 10

SCORE OnePlus 13 Pros Big battery lasts a day and a half or more

Great performance in gaming and browsing

Neat minimalist design Cons Only four years of Android updates

$900 price for only 256GB of storage

Slight heat management concerns

Have you ever neared the end of your day and worried your phone was about to die on you? Of course, you have -- battery life remains one of the top three features we prioritize. That's why the new OnePlus 15 is so promising, boasting a 7,300-mAh battery, which is nearly half again as large as the 5,000-mAh capacity of other high-end smartphones, including the iPhone 17 Pro Max.

The OnePlus 15 is the newest handset from the Chinese phone-maker, progressing from the OnePlus 13 released in January -- the company says there are so many upgrades it felt appropriate to skip a 14th entry, which is a bit of an exaggeration. But there are standout improvements beyond the battery life that distinguish the phone from the pack.

The OnePlus 15 does have a flagship cost to go along with those specs, with a $900 starting price for the 12GB RAM and 256GB storage option and $1,000 for 16GB and 512GB of storage. That's $100 above the entry-level Samsung Galaxy S25 and Google Pixel 10, but the OnePlus 15's faster performance and bigger battery could justify paying a bit more.

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