MULTIPLE CHARGES 10,000 mAh can recharge a smartphone up to 3 times over, providing an additional 25 hours of call time or 21 hours of web browsing. * *Charges iPhone 7 (running iOS10) up to 3 times on a single charge in internal testing 5V 2.4A = FAST CHARGING 2 universal USB-A ports deliver 5V 2.4 amp output so you can charge your devices in no time, just use the cable provided to begin charging. Recharge between uses quickly with 5V 2.4 amp input via a micro-USB port. Simply connect to a wall charger or other power supply using the Micro-USB cable provided to recharge your power bank (a.k.a. portable charger). THE SAFETY TRIANGLE Belkin batteries include sensors monitoring heat, voltage and circuitry so the power bank (a.k.a. portable charger) will not overheat and harm your devices. Excess heat, voltage fluctuation or circuit abnormalities activate an override that shuts the battery down immediately for ultimate safety. KEY FEATURES 1. Temperature rise regulation prevents overheating and energy loss 2. The thin, polymer battery cell more than doubles the battery life of mobile devices* 3. Durable, plastic casing keeps the battery pack safe and lightweight *When charging iPhone 7"