AVANTEK 20000mAh Portable Charger Power Bank with 4.8A Output - White Ultra-high capacity of 20000 mAh is enough to charge an iPhone 5S 11 times, an iPhone 6 Plus or Galaxy S5 6 times, an iPad Air almost twice and any other tablet more than twice Recharges in 10-12 hours with the included AC adapter; charging cables for specific devices are not provided; we recommend using the original cables of your devices for best performance Top-grade Samsung battery cells provide stable output and show no degradation within 400 discharge cycles; smart circuit offers an energy conversion rate of 90% and prevents overcharging Each port supplies a current of up to 2.4 A and automatically recognizes your device for full speed charging; maximum combined output of 4.8 A can simultaneously charge two tablets at full speed Four LED indicators reveal the amount of remaining power; built-in white LED flashlight for low-light enviroments can be switched on or off by quickly pressing the power button twice