Realme has recently hosted its 828 Fan Festival in China on 27 August 2025, during which it has presented two interesting concept smartphones, indicating its interest in the innovation of battery life and thermal management. The most interesting part of the event was a concept smartphone with an enormous 15,000mAh battery, which was to test the boundaries of mobile power.
Positioned as a portable power station, the device has the ability to reverse charge other devices including smartphones and wearables through a wired connection. Chase Xu, the Vice President of Realme, stated that the phone could allow users to binge-watch 25 films in a row on a single charge, which shows the outstanding stamina of the phone.
Realme Shows Concept Smartphones
This concept device provides outstanding flexibility, with the capability to record 18 hours of video, play 30 hours of games, last six days of normal use, and up to three months in standby mode when in flight mode. Although full specifications remain under wraps, the handset was seen on social media running on Android 15-based Realme UI 6.0.
It is reported to have a MediaTek Dimensity 7300 processor and 12GB of RAM and 256GB of internal storage with the possibility of virtually increasing the RAM by another 12GB. The concept phone is called PKP110 and has a 6.7-inch display and a dual-rear camera. The teaser photos show that it has a sleek silver finish with the battery capacity of 15,000mAh branded on the back panel.
Along with this high-performance device, Realme launched the Chill Fan phone, which will maintain thermals well when performing heavy activities such as gaming. The phone also features an integrated cooling fan, which is also referred to as a cooler or built-in AC inside, and which is said to lower the temperature of the handset by as much as 6 degrees Celsius. The teaser video shows a vent grille on the left frame, through which heat can escape easily. Design-wise, the Chill Fan phone takes the camera module of the Realme GT 7T, and it is in a blue colorway, but slightly more saturated than the IcySense Blue of the GT 7T.
These two concept smartphones reflect the interest of Realme in experimenting with new features that can make the user experience even more enjoyable. The 15,000mAh phone is focused on long battery life and reverse charging, and the Chill Fan phone is designed to solve the problem of overheating that is experienced when using the phone over a long period.
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