Jackery Inc (99% positive feedback lifetime) via Amazon offers its PowerBar 77Wh/20800mAh 85W Travel Laptop Power Bank with an AC outlet for $199.99 shipped when you use code JPowerBar at checkout. Normally $150, this is a match for our last mention and the best currently available. The PowerBar features a full-sized AC outlet which allows you to plug in just about anything to power it up, even the 15-inch MacBook Pro. This is a must-have if you plan to travel a lot this summer. Rated 4.3/5 stars.
Nomad Base Station
Jackery PowerBar features:
AC Outlet Portable Charger: 110V/85W (100W max.) AC outlet provides a great solution to AC power supply. Compatible with a wide variety of laptops and other AC plug devices, Jackery portable power external battery is perfect for travel and business trip on plane and outdoor family camping (NOTE: please press the power button for 2 seconds to turn on/off the AC output and remember to turn off the AC outlet after using or the battery will drain out)