Features: brand new and high quality Battery adapter DCB200 10X21700 for most tools and allows for use of - 18volts compact batteries. 18V battery adapter, excellent design, built-in USB Port design for charging low-power electronic products. Products built-in for protection against overcharging, over discharge, over current, provides short circuit for protection and steady voltage circuit, all of these lengthen battery life. High capacity offering long-lasting performance and durability. for DCB200 10X21700. Made up of premium lithium ion battery cells, lithium-ion has no memory effects, more Powerful output and larger capacity with lighter weight in the same size. Specifications: Material:Plastic Size:Approx.12.8x7x8cm/5.04x2.76x3.15inches Color:Black Package Includes: 1 Set Battery Housing note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.