ITEM NAME:DC-DC Adjustable LM2587 Boost Regulator Step-up Power Converter Power L7A4 DC-DC Adjustable LM2587 Boost Regulator Step-up Power Converter Power Supply Module Board with High Power Terminal for Solar Panel Car Battery L7A4 Input voltage range: 3.5V-30V (must ensure that the output setting voltage is higher than the input voltage) Output voltage range: 4.0V-30V Input maximum current: 5A (According to Power conservation Calculate the nominal