Realme introduced two new concept phones during its 828 Fan Festival in China. The first is a smartphone with a 15,000mAh battery, which is advertised to offer up to five days of usage on a single charge. The second features a 10,000mAh battery and comes with a built-in cooling fan and thermoelectric cooler, which Realme claims can reduce temperatures by up to 6°C.
Realme 15,000mAh features a 100% silicon anode battery design. Realme claims that’s 4x more than what you find on conventional Si-C batteries. The battery gets a whopping 1,200 Wh/L energy density, and it helps achieve some unheard-of running times. Realme switched to solid electrolytes while also optimizing the battery packaging process and reworking the motherboard components.
Realme claims you can get over 50 hours of video playback, over 18 hours of video recording and 30 hours of gaming. Despite the massive battery capacity, the phone is still 8.89mm thick. Realme also revealed that the battery measures 6.48mm and the device can be used as a powerbank to its reverse charging capabilities.
While Realme did not announce any additional specs, several posts on Weibo revealed the device is equipped with MediaTek’s Dimensity 7300 alongside 12GB RAM and 256GB storage. It also features a 6.7-inch display and boots Realme UI 6.0 based on Android 15.
Realme Chill Fan Phone brings three cooling methods, including a large 7,700mm2 vapor chamber, a spinning fan for heat dissipation and a thermoelectric cooler. The latter is integrated into the phone. The combined cooling methods can help the device lower its running temperatures by up to 6°C while still achieving maximum FPS in 20+ popular gaming titles.
The Chill Fan Phone concept looks similar to the Realme GT7 series and features Realme’s IseSense Ultra back, which shifts color from white to blue as the phone cools down.
Both phones are just concept devices meant to showcase Realme’s R&D capabilities and will not be released to the market.