A couple of months ago, I got a smartphone and took it along on several cycling trips. I was excited about being able to look up maps 'n stuff...
However, after or during each trip (with painful rationing of the phone), I'd inevitably say something like this:
"Stupid ^)%*^!! smart phone, what's the &^%! point if the battery doesn't last for even one day? This thing sucks. ^%$#^%$#."
My boyfriend listens.
For my birthday, he made me a battery pack that can charge up my phone, twice!
And, for a special touch, he put it inside a dutch cycling patch repair kit.