Spare 12V 2000mAh battery for use with the Clipperman Dragon clipper and Clipperman Joust trimmer (two supplied as standard with the Dragon and Joust). When used with the Dragon it will give a run time of up to 2 hours with a 1.5 hour charge time. When used with the Joust it will give a run time of up to 3.5 hours with a 1.5 hour charge time.