So look - basically I don't care what your opinion is - I will not buy a device like this that doesn't have at least 8 hours of battery life, period the end. And I'm pretty confident I'm not alone in that.
Does anyone here really care about anyone's opinion or are we just passing time in geek form? Anyway, I understand your point about forgetting to plug in the HP Slate, but honestly, that's a non point. You really don't need this device for business purposes. You don't need the Ipad either. If my Ipad or HP Slate was dead, oh well, I use my computer or Iphone. You do remember to charge your Iphone everyday right? There isn't much during your business hours that the Ipad can do that the Iphone can't. You CAN read a book on an Iphone however can you do that at work and not get fired? I don't have the luxury of doing ANYTHING at work that isn't work related except maybe listening to music.
These devices are for entertainment only.... Can you do work related things on them? Yeah, but there are much better devices that currently do them. 5 hours of battery life is fine for most people. It has been fine for Iphones....
Don't get me wrong, I won't be pissed if they decide to put a better battery on the HP Slate.