Originally Posted By: dougwalkabout
Thanks for the clarification. To follow up -- do you expect to have ready access to vehicles that operate on 12VDC? And, do you have a standard computer USB charging cable? If 'yes' on both counts, you may choose to add a 12V-to-USB plug to your kit, readily available for under $5.


Yes, I already have a power converter with USB plug. In fact, I got it with this very purpose in mind. But I feel like some other power source would be useful, too. One of threats where I live is tornadoes, and cars can get destroyed.

Thanks for the suggestion, though. On a general note, the more I read our forum, the more impressed I am by the knowledge, civility, and the writing skills of our participants. This is a nice place.

Da Bing