ITEM NAME:100W DC-DC LTC1871 Digital Boost Step up Adjustable Converter 3-35V to 3.5-35 Ew Specification: Brand new with high quality Size:67.5x41.5x14/2.66"x1.63x0.55"(approx) Performance parameters: 1.Input Voltage:3-35V(Note:When input voltage is less than 4V,onboard voltmeter will not work). 2.Input Current:9A(Max) 3.Output Voltage: 3.5-35V DC(this board is boosting board,output voltage>=Input voltage). 4.Output Current:6A(max) 5.Output Power:65W(when the input and output voltage greater than 20Vup to 100W) 6.Conversion Efficiency:96%(the highest) 7.Output Ripple: 40mV(TYP) 8.Onboard Voltmeter Range: 4-40V 9.Error:+/-0.1V The module has high power output and efficiency(up to 96%) The output can be up to 65W(and can further reach 100W when enhance heat-transfer) Onboard we have a voltmeter to show clearly the input / output voltage (we can select to show input/output voltage by pressing on the button onboard) When the "IN"LED lights on,the volmeter display input voltage; When the "OUT"LED lights,the voltmeter displays output voltage. We can alse turn off the volmeter LED by removing the jumper cap at"P2(Please refer to below image)".The output can be up to 65W(and can further reach 100W when enhance heat-transfer). Output Current:6A(max). The module has high power output and efficiency(up to 96%). Output Ripple: 40mV(TYP).