Question about RAVPower Rp-Pc006

I have a huawei p10 that comes with a quick charger of 5V/2A to 5A. I am not sure if it's compatible with this charger, because this charger can't give more than 3A. And voltage of 9V is higher than factory charger, I am afraid the high voltage will break the battery. Any one have an idea about that and can suggest a backup charger for huawei p10

Quick Charge 3.0 & iSmart 2.0 -> 5V / 2.4A, 9V / 2A, 12V / 2A

'' DUAL USE: QC 3.0 port charges at a powerful 12V/2A and also provides 5V/2.4A output for non-QC devices - dual port design lets you charge 2x normal devices (iPad, iPad, etc.) at the same time for 4.8A total output. ''