This unit comes with a FREE Smart Charger. The Tennis Tutor ProLite Plus is the smallest and lightest professional ball machine. It is a full-featured yet it stands only 12 inches tall and weighs less than 30 pounds. Patented technology borrowed from the world's #1 portable ball machine, the Tennis Tutor, makes it possible. Tennis Tutor ProLite Plus Battery Powered Model has a built-in rechargeable battery that typically delivers two to three hours of playing time. It can be recharged between 500 and 1,000 times before replacement. The Battery Models come complete with a plug-in charging unit that fully charges the battery overnight. Features Include: -Five-second Set-up. The ball hopper opens in seconds to hold 125 tennis balls. Just load the balls and you’re ready for action. -Versatile Speed. Ball speed is variable from a gentle toss that’s ideal for kids just beginning tennis, to hard-hitting groundstrokes that will challenge even top amateur players. -Variable Ball Feed. Ball feed rate is variable from one ball every 1-1/2 seconds (for quick-reaction volleys), to one ball every 10 seconds. -Start-up Time Delay. A start-up time delay allows the player time to get to the other side of the net before balls begin shooting. -Full Range of Trajectories. Ball trajectory is manually adjustable from groundstroke to lob. -Full-Court Oscillator. When you’re ready to hit on the run, just flip the oscillator switch and Tennis Tutor ProLite will deliver shots randomly across the court. -Large caster wheels for easier towing -3 year limited warranty on parts and labor (NOT including battery) Tennis Tutor ProLite Plus is backed by a one-year warranty covering both parts & labor. Extended warranties available. Specifications: Ball capacity...........................110 Balls Playing Time.......................... 3 to 4 hours Trajectories............................Groundstroke to Lob Max. Ball ejection speed.....10-75 MPH Ball feed rate..........................1.5 to 10 seconds Oscillator.................................Built-in Dimensions (closed)...........22"L x 14"W x 20"H Weight (Battery Model).........36 pounds Sports Tutor ttplpbat