Feature: 1. [Portable and Lasting] This conversion line and battery socket set is suitable for replacing traditional backpack battery, which is more lightweight and portable, offering long usage time. 2. [Wide Compatibility] Compatible with for BL1830B 2, BL1850 2, BL1850B 2, BL1840B, BL1820B, BL1860B 2, BL1830, BL1840, BL1850, BL1860, BL1815, BL1430, BL1450, BL1440, etc. 3. [Versatile Usage] This set is suitable for various power tools such as electric saw, car washing machine, fan, lawn mower, and lithium electric scissors. 4. [Premium Material] The li battery power tool charger is made of ABS material, which is sturdy and stable, ensuring durability and longevity. 5. [2 Sockets] The battery seat has two sockets, and can be equipped with 2 batteries at the same time, versatile and practical. Specification: Item Type: Li Battery Power Tool Charger Material: ABS Battery: 21V Lithium Cell x 2 (Not Included) Output Voltage: 21VF-198VF Current: 2A Use: Can be matched with electric saw, car washing machine, fan, lawn mower, and lithium electric scissors Application: for BL1830B 2, BL1850 2, BL1850B 2, BL1840B, BL1820B, BL1860B 2, BL1830, BL1840, BL1850, BL1860, BL1815, BL1430, BL1450, BL1440, etc.. Package List: 1 x Li Battery Power Tool Charger 1 x Conversion Cord 1 x Adapter Note: Without battery.