QUOTE(ferrari_rulz_02 @ Nov 24 2005, 12:31 AM)

yeah, 25 hours is what m$ has stated. but you can easily replace teh batteries with higher amperage ones, and you will get a lot more time out of them.
by the way, can someone please have a look, and see if the batteries say what ampage they are rated at?
The rechargeable battery pack itself does not, but inside the controller it states: 5V 450mA