Got this on playstation blog.

Hi, everyone, there have been reports about the battery life of the new PSP system (PSP-3000) being shorter than the current model (PSP-2000), following an interview we recently did with Gamespot. I’d like to make a correction and clarify that the new PSP will have equivalent battery life to the current PSP, about 4 to 6 hours for games and about 4 to 5 hours for UMD videos. While the enhanced screen of the new PSP draws a little more power, our engineers in Japan worked to reduce the power consumption of the overall system including its components, so you won’t have to worry about losing any time when enjoying the more vibrant visuals displayed with the new PSP.

We hope this clears everything up, and we’re certainly excited about letting you all get your hands on the new PSP and checking out the enhanced screen when it hits retail next month.

http://blog.us.playstation.com/2008/09/03/new-psp%E2%80%99s-battery-life-equivalent-to-current-psp/

Wow. A good thing and bad thing came from this. The good thing being that the less battery life is false which should entice me more to get the psp 3000 instead of getting a 2000. The bad thing is that I didn't know that the PSP battery life was only 4-6 hrs (playing games)....that's horrible. I knew it was short, but damn, I've never seen it in terms of hours.

That's a fairly generous estimate as well.

Crikey 6 hours max playing games? The PSP eats batteries like i eat pizza

"Crikey 6 hours max playing games? The PSP eats batteries like i eat pizza"

While I'm still getting one, that is one of the advantages of basing a handheld on a system two generations old instead of one.

Well I really see no reason why one cant take with him an extra battery... if you actually want to play 10 hours on the go, which I doubt...

I didn't realize it was so short. It really is this gen's Game Gear.

Sound like damage control to me. We'll see whether it's true once some tests are done when it's released.

4-6 hours is good enough in my view. But then if you consider it has a light producing screen and requires you to insert discs which 'spin', then it is only going to last that long. Games stored and ran on the ProDuo will last longer. DS battery life is what? 10 hours?

Neither are anything compared to the original Game Boy so they should both be in shame.

 Not really, my PSP consistenly does let me play about 5-6 hours on a single charge.