Curious what some of you are using out in the field for portable USB power packs? I have an older 4G Verizon MiFi that I frequently use in the field which I really enjoy but the battery life is about 2hours before it's almost dead. Found a very small USB battery pack that can charge it but it got me to thinking the other day when I was out in the field and my tablet on the 2m rover pole was running low (forgot to charge it).
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So I'm wondering now if there is an option out there that is both portable/light and strong enough to charge say both a smaller tablet and a MiFi all at once for a couple hours straight should I need it to finish off the day in the field? Heck even something that can sit in a smaller pouch that I can velcro to the 2m pole or bipod's clamp knob would be fine