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By certification 
DC converter,DC to DC converter,digital amplifier converter,car converter
high efficiency
application:
portable speaker system /digital amplifier
portable card power systerm
DC-DC recharger
specification:
input:DC10-16V
ouput:DC 18V-28V(you ccan choose any voltage,advice in advance),current one :19V
output current:4.5A
input current:MAX 10A
output power:MAX120W
efficiency:90%
high efficiency
application:
portable speaker system /digital amplifier
portable card power systerm
DC-DC recharger
specification:
input:DC10-16V
ouput:DC 18V-28V(you ccan choose any voltage,advice in advance),current one :19V
output current:4.5A
input current:MAX 10A
output power:MAX120W
efficiency:90%
