Step down DC DC converter

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{"cid":"77747","pid":"18061428","pimg_url":"\/\/img1.b2bforus.com\/5b\/b6\/b544c5b43c2b\/product\/55593832_s-w400xh400.jpg","name":"600W Boost Converter Geree DC 600W DC Step Up Converter 10-60V Boost To 12-80V 10A Boost Car Laptop Power Supply Module","attrs":{"Price":"Negotiable","MOQ":"10 Pieces","Delivery Time":"Negotiable","Brand":"Geree"}}

{"cid":"77747","pid":"18061418","pimg_url":"\/\/img1.b2bforus.com\/5b\/b6\/b544c5b43c2b\/product\/55593777_s-w400xh400.jpg","name":"Other DC DC Step Up Down Buck Boost Power Converter Voltage Regulator Module 6-20V 12V To 12V 4A 12A","attrs":{"Price":"Negotiable","MOQ":"20 Pieces","Delivery Time":"Negotiable","Brand":"geree"}}

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{"cid":"77747","pid":"18061392","pimg_url":"\/\/img1.b2bforus.com\/5b\/b6\/b544c5b43c2b\/product\/55593637_s-w400xh400.jpg","name":"1500w DC DC Step Up Boost Converter 50A 10.5V-60V To 15V-70V 30A Laptop Solar Battery Charger Module 140x 75x 22mm","attrs":{"Price":"Negotiable","MOQ":"5 Pieces","Delivery Time":"Negotiable","Brand":"Geree"}}