DC Buck Module 12V 24V to QC3.0 Quick Charge Single USB Mobile Phone Charging Pad Support Apple Huawei FCP. Compatible with 99% of the phones in our country, this module integrates the most common 5V charge recognition function. The light weight and small size of the DC Buck Module provides ease of transport. Thanks to its USB output, it supports you to charge multiple devices with replicators. You can use this product for phone charging, car charging boost, solar charging etc. You can easily use it in the fields