Supplied by ideabright ltd description milwaukee m28bx m28 28v 3 0ah li ion battery powering the entire m28tm lithium ion system this re designed and improved battery pack provides the durability run time and power needed to complete the toughest job this improved battery pack features milwaukees digital power management system which helps to ensure that optimal battery life and run time is achieved while protecting the battery and tool during the toughest jobsite applications milwauke