ITEM NAME:USB DC Step Down Module 12V 24V To QC3.0 Phone Fast Charge for Huawei Samsun Lt 100% Brand New and High Quality ! Size:37*20*10mm Color:As Pictures Package Included:1Pcs Features: 1.Input voltage range: 6v-32v 2.Output voltage: 5V by default, automatically adjusted between 3-12v 3.after triggering quick charge 4.Output power: maximum 24W (5V @ 3.4A, 9V @ 2.5A, 12V @ 2a, etc.) 5.Output voltage wired compensation function 6.Conversion efficiency: 90% - 97% 7.Support multiple fast charging protocols 8.Input overvoltage and undervoltage protection 9.Input overcurrent protection 10.Output overcurrent and short circuit protection 11.Over temperature protection of the whole machine Support fast charging protocol: 1.Bc1.2, For Samsung agreement 2.Qualcomm qc2.0 and 3.0 3.MTK pe1.1 / pe2.0 4.For Huawei fast charging protocol FCP, does not support mate9 (SCP) 5.Spreadtrum fast charging protocol.For Huawei fast charging protocol FCP, does not support mate9 (SCP). Output power: maximum 24W (5V @ 3.4A, 9V @ 2.5A, 12V @ 2a, etc.). Output overcurrent and short circuit protection. Input overcurrent protection.