My Ouroboros doesn't work wireless...

Hey there My Razer Ouroboros Mouse works fine in cable mode. But when ich plug out the cable and click on any Buttons the LED's don't work. But they should. So I bought a new (the same) Battery. But it still doesn't work wireless. The three charging LED's work fine. They are showing me, that the battery is charging. After Hours it still doesn't work and the LED's are doing the same Thing. The battery is warm. But when I plug out the cable from the mouse and plug it in the Wireless Docking Station the LED's don't work on the mouse. Has Somebody an idea? (Sorry for my english, it's bad as hell :))