48W Dual USB QC 3.0 Fast Charge Step-down Buck Module Power 12V 24V DC Input

5pcs 24W USB QC 3.0 Fast Charge Step-down Buck Module Power 6-30V DC IN

5pcs 15W Dual USB 5V 3A DC Buck Voltage Step-down Charging Module 9V 12V 24V In

5pcs Dual USB LM2596 5V 3A Voltage Step-down Buck Module 6-40V IN with Terminals

LM2596 Step-down Power Converter Buck Module LED Voltmeter DC 4-38V to 1.25-36V

5pcs DC Boost Module 3.7V 2.25-5V Input 5V 1.5A USB Output Up to 96% Efficiency

24W USB QC 3.0 Fast Charge Step-down Buck Module Power 6-30V DC Input

5pcs XL6009 32W 4A DC Boost Adjustable Voltage Converter Step Up Power Module