Makita Battery Converter - Converts 2 x 18V for a single 36V product (BCV03)Makita Battery Converter Converts 2 x 18V for a single 36V product (BCV03) 196813 6 Features: If you have 18V Lithium ion batteries you can now utilize the full power of the 36V machines The BCV03 creates a 36v battery supply from two 18V Li ion 3. 0Ah batteries enabling you to use the 36V range of tools with your existing 18V batteries Featuring twin power meters showing the remaining charge in each attached battery Includes: Makita Battery Converter