Introducing the Standard Battery designed specifically for the RS51 device. With a robust capacity of 4000mAh, this battery ensures long-lasting performance to keep your device running smoothly throughout the day. It features an integrated NFC antenna, enhancing connectivity and functionality. Manufactured by CIPHERLAB CO., LTD., this reliable battery is identified by the part number BRS51BAT00009, making it a perfect replacement or backup option for your RS51. Experience uninterrupted usage and superior quality with this essential accessory.