I have a problem with the battery in my original Xbox's(not 360) Logitech wireless headset. It use to last 5 hours but now it only last 3 tops, sometimes only two and a half hours. And I make sure that it is fully charged each time before I use it. I've had it for about 2 years and it's just now giving me problems. The problem definitely lies in the rechargable battery. Is there anyway to repair this or should I just get another one to replace it?