Exclusive to Anker, PowerIQ and VoltageBoost combine to ensure the fastest possible charge speed up to 3 amps. Simultaneously charge an iPad and an iPhone at full speed. Surge protection, short circuit protection and more advanced safety features keep you and your devices safe. At Anker, we believe in our products. That's why we back them all with an 18-month warranty and provide friendly, easy-to-reach support.