The MX FUEL™ FORGE™ 8.0 Ah battery delivers 33% more runtime than the MXF XC406 battery in a lighter-weight design, providing an excellent balance of power and portability. Built with REDLITHIUM™ FORGE™ technology, it offers the most power, fastest charging, and longest service life within the REDLITHIUM™ range. When used with the MX FUEL™ super charger, it can be fully charged in just 45 minutes.