This car charger has 5 security protection: over current protection, overpower protection, short circuit protection, over temperature protection, overvoltage protection, a very safety car charger. Faster car charger : quick charger/qc 3. 0 Fast charging, dualUSB intelligent output port, charging time is shorter, active matching voltage and current, get enough battery power at anytime, refuse to wait and play happily anywhere at anytime, no need to worried about no power on the way. Choose quick charge 3. 0 Port to charge all your quick charge compatible devices to achieve higher power charging.