This is a DC-DC converter. It's a step-down converter that converts high voltages, such as those from a car battery, to 5V, suitable for charging USB devices. The input voltage range is 8V to 35V. The output voltage is 5V and supports up to 3A. It can supply power to various devices via a USB port. Suitable for in-vehicle equipment and DIY projects. -------------------------------------------------- * Anonymous shipping! Free shipping ♡ * Immediate purchase welcome, silent purchase at midnight OK ◎ * One-of-a-kind, first-come-first-served.ᐟ.ᐟ * Bulk purchases welcome, please feel free to comment. ・Please understand that items are stored at home and shipped in simple packaging. ・Please check the actual photos for the condition of the product♡ ※To sell at a slightly lower price, we may ship the item without the box due to shipping costs. #chii's shop list is here #chii's shop tool list is here 0051