OnePlus Ace 6 Ultra Leaks: An 8,000mAh Beast With a Flat Screen Could Be on the Way

OnePlus is testing an 8,000mAh phone! 🔋🤯 Rumored 'Ace 6 Ultra' could have a flat 1.5K screen & active cooling fan. The battery dream? 👇 

If you are tired of charging your phone twice a day, OnePlus might be working on the solution you’ve been waiting for. New leaks suggest the company is testing a new "mid-size" performance smartphone that prioritizes one thing above all else: endurance.

We aren't talking about a modest upgrade, either. Rumors point to a device packing a massive 8,000mAh battery while maintaining a form factor that isn't a brick.

The Display Details: Flat and Sharp

The details come from the reliable tipster Digital Chat Station on Weibo. According to the leak, a factory referred to as "Jiajia" is currently evaluating a new display panel for an upcoming OnePlus device.

The specs of this screen are interesting:

• Size: 6.59 inches.
• Type: LTPS (Low Temperature Polycrystalline Silicon).
• Resolution: 1.5K.
• Style: Flat, with large rounded corners and uniform bezels.

The choice of a flat screen is significant. While many flagships are moving to curved edges for looks, gamers and performance enthusiasts usually prefer flat panels for better touch accuracy and fewer accidental palm touches.

The Battery Sweet Spot

The most surprising part of this leak is the math regarding the battery. Usually, bigger phones have bigger batteries. But the tipster notes that with this specific mid-size form factor (6.59-inch), engineers have managed to squeeze in a battery capacity starting in the 8,000mAh range.

The logic is that smaller screens allow for more internal real estate for the battery cell compared to larger, unwieldy displays. If this holds true, we could be looking at a phone that outlasts almost anything else on the market without feeling uncomfortable to hold.

Could This Be the Ace 6 Ultra?

While OnePlus hasn't confirmed anything, the tech community is already connecting the dots. This lineup strongly resembles rumors we heard late last year about the OnePlus Ace 6 Ultra.

Previous reports suggested that OnePlus was testing a prototype with a 6.78-inch 1.5K LTPS flat display with a buttery smooth 165Hz refresh rate. While the screen size in this new leak (6.59-inch) is slightly smaller, the battery specs align perfectly.

The previous rumor also hinted at some serious firepower under the hood:

• Chipset: MediaTek’s flagship Dimensity 9500.
• Security: An ultrasonic in-display fingerprint sensor.
• Cooling: A custom active cooling fan.

Wait, a fan? Yes. If OnePlus is putting a fan inside a mid-size phone, they are treating it like a portable gaming console. This would ensure the Dimensity 9500 doesn't throttle, making it a beast for sustained performance.

There was even wild speculation that future iterations of this prototype could aim for a staggering 9,000mAh battery.

What to Expect

For now, this is all in the testing phase. "Jiajia" could be a codename or a specific manufacturing line, and plans can always change.

But if the OnePlus Ace 6 Ultra (or whatever it ends up being called) actually launches with an 8,000mAh battery and a fan-cooled flagship chip, it’s going to give dedicated gaming phones like the Red Magic series a serious run for their money—without looking like a spaceship.

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