Wish you could upgrade your phone battery? This brand is making it a reality

TL;DR A paid battery upgrade program lets users of the Xiaomi 13 series swap in higher-capacity batteries, with gains of 500mAh to 541mAh depending on the model. The service costs 189 RMB (~$28) and is expected to be limited, with Xiaomi urging interested users to act quickly. The upgrade comes with trade-offs, such as longer charging times, possible heat during optimization, and the need for specific software updates before installation.