Use the EW1233 2-Port USB Charger 4A to charge your smartphone and tablet. Does your smartphone support Quick Charge™ 3.0? The Quick Charge™ 3.0 function charges Quick Charge™ 3.0 enabled devices up to 4 times faster. The battery of your smartphone is charged from 0-80% in only 35 minutes! The EW1233 is also compatible with smartphones and tablets with Quick Charge™ 1.0 and Quick Charge™ 2.0 support. Even smartphones without Quick Charge™ support will be charged. The EW1233 has over temperature protection, over voltage protection, over current protection and short circuit protection.