Okay, I don't really know the answer for your laptop question.
Probably someone else here does, but just ignores it, and passes to
the next post. What you could do, though, is just plain leave
it running on it's battery, and when that dies out, just recharge
it in that lighter thingamagigy. K, I don't know how to do that, but
I do know you can somehow. My dad used to do it all the time when
we owned a laptop. And that store question.. check this out... http://www.teutonic.ca/store/mashaw/
If it doesn't work for you, get back to me and I'll barrel out somemore.