ZeroLemon describes their ToughJuice power bank as the world's toughest external battery pack, with 30000mAh capacity and a rugged anti-shock exterior. With enough juice to get you up and running again and again on a single charge, ToughJuice provides up to ten charges to a smartphone, two charges to a tablet or multiple charges to nearly any other device. It features four USB ports (1 QuickCharge 2.0 port, with legacy 5V/2A support and 3 Ports for 1A charging) but more importantly it features USB-C/Type-C Compatibility: the USB-C/Type-C port makes the battery pack compatible with the new MacBook, charging at 5V/2.5A and other USB-C powered devices. The device averages 4.5 out of 5 stars on Amazon from over 250 people (read reviews), and its list price is currently discounted to $67.99. See the discounted ZeroLemon ToughJuice power bank now on Amazon.