[Broken_Hippo]

It isn't the Telcos I think about in this situation.

It is my own phone batter. Or my spouse's - he has a dying phone with a dying battery, which doesn't always like to hold a charge. I'll be good for a while, sure, but once I'm dead... I'm dead. If something would happen late at night, after I've fiddled with my phone all day, I might start out with very little power. Early in the day, and I could make it last most the weekend.

[lb1lf]

Ah, that figures. Mea culpa. In that case, a $20 power bank should provide at least a couple of full charges - but if you're anything like me, you'll forget to top it up at regular intervals and will find that its capacity is greatly reduced when you need it... :-/ (I cheat; I have a small diesel generator for use during outages - we're typically without utility power a couple of days every winter.

[douche]

Still, any solution based around a smartphone is going to be subpar, compared to the dirt-cheap FM receiver that can run for weeks or months on a couple of ubiquitous AA batteries.