On days with light use, I have 70 percent left by bedtime. When I spent more time on the phone, using it for music streaming, navigation, and Instagram Reels-ing, I often ended with around 60 or 50 percent. I’d leave it on my nightstand without bothering to plug it in, a refreshing change of pace. Over the course of two days, I hit an amazing 10.5 hours of screen-on time.
This might be the best battery life on a flagship smartphone today in the US, especially when you pair it with the incredibly fast recharge times. OnePlus remains one of the only companies to include a charger in the box—mostly because it’s the only way to take advantage of its SuperVooc fast-charging technology. I was able to ramp from 15 to 80 percent in 30 minutes (50 percent in 15 minutes). It’s hard to worry about a dead phone if you don’t mind keeping the bulky charger on your person (is a folding prong too much of an ask?).
But there’s always a compromise somewhere. If you’re a fan of wireless charging and are especially interested in Qi2 smartphones that use magnets (like Apple’s MagSafe) for more convenient and faster charging, you’ll be disappointed here. The OnePlus 15 supports wireless charging, but only the standard Qi technology. OnePlus is selling magnetic cases as a salve, but unlike Samsung’s current crop of top-end phones, this doesn’t even turn it into a Qi2 Ready phone. It will only charge at slow Qi wireless charging speeds. (You can buy OnePlus’ proprietary wireless charger to fast-charge, but that’s a separate purchase, and that wireless charger will only recharge select OnePlus devices quickly.)
The beefy battery and super-fast wired charging may outshine the lackluster wireless charging, but now it’s time to talk about the second most impressive feat of the OnePlus 15: performance.
Power Play
Photograph: Julian Chokkattu
This is the first smartphone in the US to employ Qualcomm’s Snapdragon 8 Elite Gen 5, a processor we’ll see in most high-end Android phones in 2026. The benchmark numbers are excellent. In a Geekbench 6 test, the OnePlus 15 is officially the first phone to pass 10,000 in multi-core CPU performance, even besting the iPhone 17 Pro Max. However, the iPhone still had a slight leg up in single-core performance (it’s also generally more efficient).
