DC/DC Converter 12V Step Up to 48V 6A 288W Voltage Regulator, Power Adapter Voltage Booster, Power Supply Module Boost Transformer for Car Truck Vehicle Boat

Maybe this. The screens of your pecron should show input/output watts going from one DC out to the solar DC input. Or you can put a bluetooth voltmeter between them. https://www.amazon.com/MGGi-Waterproof-Converter-Regulator-Transformer/dp/B0D4ZH1V69