Makita DCM500Z 18V LXT Lithium-Ion Cordless Coffee Maker Brews one 5 oz. cup of coffee in 3 min. when plugged into a power outlet; brews one 5 oz. cup of coffee in 7 min. when powered by an 18V LXT battery No paper filters needed; permanent drip filter allows grounds to be poured directly into coffee maker Battery adapter can be removed when using AC power Compact design at only 8-3/8" tall with a 3-1/2" cup clearance Boil dry protection automatically turns the coffee maker off if there is not enough water