Love this Sherpa power bank. I use it for camping and charge it with a Nomad 28 in just over an hour. It will charge my phone, headlamp, and lanterns with power to spare for running a humidifier all night in my tent. The power indicator on the Sherpa lets me know how much power is being used and how long it will sustain that power use. Great product. Light enough for backpacking, but rugged enough for outdoor use.
Just got it so just ran function and usability tests. All passed and seems to be a great product. Time will tell but so far I like it. Just the one year warranty makes me wary.