Portable military hand power generator with double cranking handles, 3-28V adjustable, useful emergency powr supply Hand dynamo power generator with two handlesUsed as emergency power and typically charging batteryApply Nd-Fe-B brushless motorMax. output power up to 50wWith voltage adjustor for DC 3,5,6,9,12,14,16,18,20,24,and 28VCurrent & thermal overload protectionLightweight and compact size, ...