User friendly, gets the job done
I used this product while living on the road in combination with the Boulder 50 solar panel, and it was a good pair for somebody who didn’t need excessive amounts of power. The most power I’d use is to run a fan overnight on the hotter nights. That would usually take the battery from 100% don’t to 20 or 30%, but for my other uses which we’re charging my phone, computer, and camera, I could get multiple charges in no problem. I had the solar panel mounted to my roof so if it was sunny it was constantly charging, so I seldom had to worry about running out of power. And if it was a concern, I could take it into a coffee shop with me and charge it out of the wall if I really needed to. Ideally 100 watt panels would have been nice, but 50 worked just fine. It’d take about 10 hours or so of full sun to charge to full. But the battery life was great and it was easy to use.