Sony is hoping that the PlayStation Vita battery life will be close to that of the PSP.
That's the general target for the platform holder, reports suggest, but the company's naturally a little more pessimistic when it comes to graphically intense titles like Uncharted.
Engadget reports: "[Sony's] not talking battery life, but a developer told us that - with the exception of graphically intensive titles like Uncharted - the company's shooting for parity with the original PlayStation Portable."
Our E3 agent has already had a fiddle with the PlayStation Vita and it's safe to say he's impressed. See for yourself in our PlayStation Vita hands-on video.