[Product Details]: Battery Type: Lithium Ion; Voltage: 20V; Capacity: 3000mAh/3.0Ah; It’s a replacement battery Compatible with black and decker 20V battery [Compatible with Black and Decker Replacement Batteries]: Compatible with Black and Decker 20V Battery LBXR20 LB20 LBX20 LBXR2040 LB2X4020-OPE LBXR20B-2 [Easy to use]: with easy eject, interface protection design, more convenient to use [Multiple Protection Functions]: With built-in overcurrent protection,overcharge and overdischarge protection circuits,you can use it with peace of mind,without memory effect,and it can be charged further [Friendly Service]: If you have any questions about the product, please feel free to contact us. We will do our best to ensure customer satisfaction