This is a rechargeable Baofeng 3.7V 5800mAh BL-M4 Battery . High quality and long lifetime, this BL-M4 battery lets you work seamlessly when you are on the move for business trips or vacations. All our Li-ion replacement batteries for Baofeng BL-M4 Radio have been tested and proven to match and/or exceed original battery performance and are 100% […]