Battery anxiety might soon be a thing of the past if a new leak from Realme’s supply chain turns out to be the real deal. A mystery smartphone carrying the model number RMX5107 has surfaced online, and the headline specification is hard to ignore: a staggering 10,001mAh battery tucked inside what looks like a standard chassis.
Moving Beyond Concepts
We saw hints of this technology earlier this year when Realme showed off a “GT 7” concept device with similar capacity. At the time, it felt like an engineering flex—a “look what we can do” moment. But this new leak, reportedly originating from a Telegram group, suggests the company is actually moving toward mass production.
The screenshot of the “About Device” page paints a picture of a serious daily driver, not just a battery bank with a screen. The unit is listed with 12GB of RAM and 256GB of storage, running on Realme UI 7.0. Since that software is based on Android 16, we are likely looking at a device scheduled for release deep into 2026.
How Is It Not a Brick?
The immediate question with a 10,000mAh battery is size. Traditionally, phones with this kind of capacity look like ruggedized bricks meant for construction sites. However, Realme seems to be leveraging new silicon-carbon anode technology.
By increasing the silicon content in the battery, manufacturers can boost energy density significantly. This allows them to cram more power into a smaller space. If the earlier concept specs hold true for this production model, Realme might deliver this massive capacity in a phone that is just 8.5mm thick and weighs around 200g. That is barely heavier than an iPhone 16 Pro Max, but with more than double the battery life.
Market Impact & Context
This leak signals a major shift in the “battery wars.” For years, fast charging was the battleground—companies raced to see who could charge a phone in 10 minutes. Now, the focus is swinging back to raw endurance.
Realme isn’t alone here. Honor has already teased its “Power 2” handset with a similar 10,000mAh cell. This indicates a new trend for Chinese manufacturers: creating “endurance flagships” that solve the biggest pain point of modern smartphones without forcing users to carry a heavy, thick device.
Conclusion
With regulatory certifications reportedly appearing in Russia, the RMX5107 is moving closer to reality. If Realme can price this competitively, it could carve out a massive niche for power users who are tired of carrying power banks.
