These work too, and have a better case than a bare PCB: https://www.amazon.com/PortaPow-Charge-Block-Adaptor-SmartCharge/dp/B00T0DW3F8/ https://www.amazon.com/

These work too, and have a better case than a bare PCB: https://www.amazon.com/PortaPow-Charge-Block-Adaptor-SmartCharge/dp/B00T0DW3F8/ https://www.amazon.com/PortaPow-Charge-Block-Adaptor-SmartCh...