... motorMax. output power up to 50wWith voltage adjustor for DC 3,5,6,9,12,14,16,18,20,24,and 28VCurrent ... -28VRated current: 0.7-3ARated speed: 90rpmOutput ripple ratio: 0.5-1.2%Output ripple voltage: 100-300mVOutput cable: 2x0.5mm2 ... ºCDimension: 113*65*48mm Double Handles Hand Cranking Power Generator - DC output 3-28V adjustable