The BN4A battery is a compatible replacement for Xiaomi, Mi, and Redmi Note 7 and Note 7s Note 7 Pro smartphones, boasting a high-capacity 3900mAh or 4000mAh Li-Polymer battery, depending on the variant. This battery ensures extended usage times, enabling you to enjoy your device for longer periods without frequent recharges. Its Li-Polymer technology ensures reliability and durability, providing a dependable power source for your mobile device, so you can stay connected and productive throughout the day.