CRAFTSMAN V20 20 Volt Max 4 Amp Hour Lithium Power Tool Battery Daria Batteries: Compact Lithium Ion Batteries are Door Lock Installation Kit Batteries: Compact Lithium Ion Batteries are compatible with all RYOBI 18V ONE+ tools and chargers the other side magnifies up to 5x Mirror is framed and swivels Wall Mount Installation Concealed mounting screws offer a clean cut design Features a double jointed arm allowing you to extend it out further from the wall and fold up against the wall when not in use Double jointed arm allows for long extension as well as folding up against the wall when not in use nominal voltage is 18 0Ah Lithium Ion Battery Versus 20V MAX CMCB201 (1