UCP-5P supports charging five digital devices at the same time, with the main car charger equipped with two 5V2.4A ports (17W Max), and the expanded charger built-in with a QC3.0 and two 5V / 2.4A ports, giving a total output of 52W. QC3.0 quick charge technology QC3.0 adopts "voltage intelligent negotiation" algorithm, the charging voltage is graded by 200mV increments according to the charging state, which provides right voltage to phone, thus minimizes power loss, improves charging efficiency.