ITEM NAME:DC-DC Converter 20A 300W Step-up Step-down Buck Boost Power Adjustable Charger Descriptio n Specifications: Brand new and high quality! Input Voltage: 5 V to 40 V DC (10 V to 40 V. it is suggested) Output Voltage: 1.2 V to 36 V DC Output Current: 20a (max.), 15th (suggested) Efficiency: 95% (24 V to 12 V, 20a) Ripple output: