AnkerDirect via Amazon has Anker PowerCore 26800 Portable Charger, 26800mAh External Battery with Dual Input Port and Double-Speed Recharging, 3 USB Ports for iPhone, iPad, Samsung Galaxy, Android and Other Smart Devices. Shipping is free
https://www.amazon.com/Anker-Powe…167&sr=8-4
https://www.amazon.com/Anker-Powe…167&sr=8-4