Comment: Too late to be useful? (Score 2) 284
I remember the days when my laptop would only run for a couple of hours on battery and then die. Back then seats next to electrical outlets at airports and coffee shops were in high demand as the road warriors clustered around them.
But now I have an "eight hour" battery (which I am sure will run for 5+ hours, perhaps more). So I don't care any more. A few days ago I was in a meeting with the projector connected to my laptop running on battery. A colleague helpfully passed me a power cord - and I literally stared at it for five seconds thinking "Why? I don't need this, the meeting will only run for another hour at most and I'm 100% confident that my battery will last."
So there might have been a market for this up until 2010/2011 or so, but that market is disappearing fast. If your business model is to charge people $5 for $0.005 worth of electricity at airports