i think newegg carries them. I bought mines at bestbuy for retail price because i couldn't wait. The batteries have a charging station. Basically youjust put the mouse with the batteries still in on the charger and in 10 minutes, it supposed to be good to go. On a full charge i get at least 7-8 hours of intense FPS gaming. At a LAN party i doubt you'll play continously forever. i think it'll be fine, when you get up to go to the bathroom, throw the mouse on the charger. My suggestion is before you get it, head over to compusa/bb and see how you like it before you buy it online.