PSV with 3 to 5 hours of use

Three to five hours of gaming is what you will get from a full charge of the upcoming PSV, before you once again will have to find a power-outlet. Sony also has confirmed that it will take approximately two hours and forty minutes to recharge the handhelds battery, and that you can expect to have five hours of use if you are watching movies, and nine if you are listening to music.

Is this enough for you or do you expect to invest in an extra battery at launch?