Realme’s 828 Festival Debuts 15,000 mAh Battery Phone and Innovative Chill Fan Phone

Recently Realme has hosted its 828 Fan Festival in China on 27 August 2025, where it has introduced two interesting concept smartphones, which also suggests its interest in innovation of battery life and thermal management. The most exciting aspect of the event was a concept smartphone with a massive 15,000mAh battery that would be used to push smartphone battery power to its limits.

The device is marketed as a portable powerpack and can charge other devices such as smartphones and wearables using a wired connection by reverse-charging. Chase Xu who is the Vice President of Realme indicated that the phone could enable one to watch 25 movies consecutively on one charge, which demonstrates the excellent battery life of the phone.

Realme Shows Concept Smartphones

In this concept device, there is unrivaled versatility, whereby it can record 18 hours of video and play 30 hours of games, last six days of normal use, and up to three months in standby mode when in flight mode. Details of the device are still under wraps but it was spotted on social media surfing on Android 15-based Realme UI 6.0.

It is alleged to have a MediaTek Dimensity 7300 chipset and 12GB of RAM and 256GB of internal storage, which may be extended virtually to 12GB. Its design phone is known as PKP110 and is designed with a 6.7-inch display and dual rear camera. The teaser images reveal that it is shiny silver in nature and the battery capacity of 15,000mAh is plastered at the back of the phone.

Together with this powerful device, Realme introduced the Chill Fan phone, which will not have problems with thermals when hosting intense tasks like gaming. It also has an in-built cooling fan, known as cooler or built-in AC inside, which has the reported ability to cool the handset to as much as 6 degrees Celsius. In the teaser video, it can be seen that the left frame has a vent grille, which allows escape of heat easily. Design-wise, the Chill Fan phone simply takes the camera module of the Realme GT 7T, but in a slightly more saturated blue colorway, the IcySense Blue of the GT 7T.

These two concept smartphones illustrate the fact that Realme is interested in testing new features that can make the user experience even more pleasant. The 15,000mAh phone is battery-oriented and can charge other devices, and the Chill Fan phone is based on the overheating issue that users have when using the mobile phone for a long time. 

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