I keep a charging "brick" in my car, and just top it up every month. In an emergency, I could charge my phone/tablet about a half dozen times. I figure that's a

I keep a charging "brick" in my car, and just top it up every month. In an emergency, I could charge my phone/tablet about a half dozen times. I figure that's a lot more useful to me in a genuine emergency I'm likely to experience, than this toy.