Thinking about this, I might wait for the 1 month point and then chuck them. I might be asking for trouble. Although so far I have no real desire to smoke.
Solar chargers would do little in a storm that put the electricity out, but it's a good idea if your on the road. Although My Dodge Journey has two lighter plugs, a 110v plug in the back and a usb port for the built in hard drive so I don't really worry about it.
Same here.I keep them to laugh at!