High-speed charging - PowerIQ technology provides intelligent high-speed charging for all your devices, and VoltageBoost prevents cable resistance from slowing down charging speeds. Safety system - surge protection, short circuit for complete safety of you and your devices. Enough energy to spend days away from the mains charger. Using Qualcomm's advanced Quick Charge 3.0 technology, PowerCore + charges compatible devices 85% faster. Up to 8 hours of use in just 15 minutes of charging. Anker's PowerIQ and VoltageBoost technologies combine to provide universal high-speed charging for devices without fast charging technology. With its sleek aluminum shell and ergonomic curves, the PowerCore + 13400 is the perfect partner for your iPhone or Android smartphone.