Amazon.com: DROK® 10A Synchronous Step-Down Voltage Regulator DC-DC 4-30V to 1.2-30V 12V Continuously Adjustable Volt Buck Converter Module Board Constant Voltage Power Supply Transformer for Automotive : Electronics
50pcs 10A10 1000V diode 12v sperrdioden High Voltage Rectifying Diodes One Way Electrical Conductivity: Amazon.com: Industrial & Scientific
DG7512 Diode Module DC 5V-75V 12V 24V 36V Max 12A Solar Energy Anti Backflow Board for Battery Charging Protection: Amazon.com: Industrial & Scientific