20v Max String Trimmer & Sweeper Lithium Ion Combo Kit. 20 V Max Lithium Ion battery has a longer lifespan and retains its charge 5X more than similar Nicd batteries. Includes (1) 1.5ah (ampere hour) lithium battery pack for 33% more run time per battery pack than our previous LBXR20 pack and charger. The automatic feed spool ensures continuous work without bumping and having to stop to adjust the spool. The String Trimmer features an exclusive gear drive transmission which delivers more cutting power to get the job done faster. It is quiet and easy to start, delivering great cutting results without the mess and hassles of gas powered trimmers. Two-Tools-in-One: Trimmer easily converts to edger to cut along sidewalks and driveways for a clean, manicured look. Sweeper is light and powerful and easily clears debris from hard surfaces like patios, decks, walks, drives and garages.