If you've followed OnePlus, you know that the Chinese smartphone maker loves its batteries and optimizing battery life.
Its phones already feature massive batteries, and the recently released OnePlus 13 sports a huge 6,000mAh battery.
The batteries of the OnePlus phone are so good that they take four of the top ten slots in our picks for the smartphones with the best battery life, only losing to the Asus ROG Phone 9 Pro.
However, that's just the first step. A leaked roadmap and a report from regular tipster Digital Chat Station (via Phone Arena) claim that OnePlus is developing 7,000mAh — and, eventually, 8,000mAh batteries.
The roadmap indicates that the next flagship OnePlus phones could feature impressive 7,000 mAh batteries. However, that may not be enough for OnePlus, as DCS claims that OnePlus is developing a ridiculous 8,000 mAh battery.
More powerful batteries in the works
In their post, DCS wrote, "Ouga Lab tested 8000mAh ± 80W, 15% silicon content."
Ouga Lab is a research and development center for Oppo and OnePlus. Based on DCS' claim it appeared the lab produced a battery significantly bigger than the glacier battery introduced with last year's China-exclusive OnePlus Ace 3 Pro. This new battery increases "silicon content" from 15% to 6%, more than the Ace 3 Pro.
According to reports, silicon can store more lithium ions than graphite, making the power cells made with it more powerful than traditional batteries.
It's also supposed to support 80W SuperVOOC fast charging speeds.
It will be interesting to see if these larger batteries make OnePlus phones bigger. Part of the reason for introducing the Glacier battery was that the manufacturer could pack 6,000mAh worth of capacity into the same space as a 5,000mAh battery.
Blows current phones out of the water
If OnePlus is able to launch 7,000 or 8,000mAh smartphones, that high capacity would likely blow the Samsung Galaxy S25 Ultra or iPhone 16 Pro Max out of the water, despite their current excellent battery life.
| Row 0 - Cell 0 | Battery Size (mAh) | Battery life (hours:mins) |
Galaxy S25 Ultra | 5,000 mAh | 17:15 |
Galaxy S24 Ultra | 5,000 mAh | 16:45 |
iPhone 16 Pro Max | 4685 mAh | 17:35 |
Asus ROG Phone 9 Pro | 5,800 mAh | 20:34 |
OnePlus 13 | 6,000 mAh | 19:45 |
Pixel 9 Pro XL | 5,060 mAh | 12:54 |
As you can see from the above table, it would even best current offerings from OnePlus. The additional 1,000 or 2,000mAh of a new battery would presumably at least two hours, possibly more to its capabilities.
Though, as you can see with Google's Pixel 9 Pro XL, it's not all about battery capacity. Optimized chips like Qualcomm's Snapdragon 8 Elite or Apple's new A18 processor also do a lot for making phones operate more efficiently. Google's current Tensor chips aren't as good at that aspect of maintaining stronger batteries.
OnePlus currently uses Qualcomm's chips which combined with the bigger batteries could lead to impressive results down the line.
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