Upgrade your Xiaomi smartphone's performance with the high-capacity Boxtron Original BN46 Mobile Battery, specially designed for Xiaomi Mi Redmi Note 8. Powered by a high-density 4000mAh Lithium-Ion Polymer cell, this battery delivers long-lasting power backup, stable voltage output, and seamless fast charging support. Equipped with an advanced Smart Microchip Safety System, it provides multi-layer protection against overcharging, overheating, short-circuits, and excessive discharge to ensure complete safety for your device. Perfect for replacing worn-out or draining batteries, Boxtron guarantees strict quality testing and precise fitting to restore your mobile phone's original daily backup performance. For optimal long-term battery life, fully drain and charge the battery to 100% for the initial 3 to 5 charge cycles.