Xiaomi Redmi 15 4G 

Powered by advanced silicon-carbon anode technology, Redmi 15 delivers an ultra-long battery life experience like never before.When the battery level drops to just 1%, it stays in standby mode, ensuring you can still make and receive calls.Enhanced by a BatteryExtender Chip and innovative cell material systems,

the battery supports 3.0V low-voltage shutdown, significantly improving available capacity in low-temperature environments.

Even after completing 1,600 full charging cycles, the battery still maintains 80% or more of its original capacity.