Thinking about emergency power

Recently someone sent me a link to a video about creating a relatively inexpensive battery pack that recharges using solar panels. While I'm not sure I'd trust the way that it was made, in theory it sounds like a great way to deliver emergency power to someone in need. With more and more large scale natural disasters, being able to rapidly deploy emergency power is vital to helping people get back on their feet. While governments and companies are building ways to help a large number of people at once, I think the concept of having personal portable power for any emergency is something worth considering.

I've started looking at systems that I could use and GoalZero makes a number of systems that can provide adequate power in an emergency and recharge using solar. The systems, however, are just a tad too expensive for me to purchase right now. I could see myself getting one of the 400W units as it could power vital electronics in an emergency; vital being cell phone (if it even worked), portable radio, recharge flashlights (my flashlights pretty much all recharge via USB), and maybe a laptop to keep in touch. Of course, I'm sure I'll kick myself if I need it and I was too cheap to purchase it, but for now I'm just going to leave it on the nice to have list.