Ultra-High Cell Capacity: The massive 20,000mAh cell capacity provides more than 5 charges for iPhone XS, almost 5 full charges for Samsung Galaxy S10, more than 4 charges for iPhone 11, and over 2 and a half charges for iPad mini 5., Advanced Charging Technology: Anker's exclusive PowerIQ and VoltageBoost technology combine to deliver an optimized charge to your devices, while the trickle-charging mode is the best way to charge low-power accessories., Simultaneous Charging: Twin USB ports allow you to charge two devices at the same time. The USB-C port cannot charge other devices., Versatile Recharging: With both a USB-C and Micro USB input port, you have more options over how you recharge. Recharging PowerCore with a 10W charger will take approximately 10.5 hours, while recharging with a 5W charger will take approximately 20 hours., The Slim & Powerful 20,000mAh Portable Charger, Premium Design: Built adventure-tier touch with superior durability and scratch resistance, PowerCore Slim 10000 is premium both inside and out., Power for Days: 20,000mAh is enough power to keep your phone, tablet, and other devices charged for days. You'll wonder how you ever spent so much time plugged into the wall., Superior Safety: Anker’s comprehensive MultiProtect safety system includes overcharge protection, short circuit protection, temperature control, and more., Trickle-Charging Mode: Trickle charging is designed to provide optimized charging to low-power devices such as earphones, Bluetooth speakers, and other accessories. To activate, press the power button twice or press and hold for 2 seconds until the LED indicator turns green.