Even with the battery pack my kid's headset seems to still always be dead when we go to play. But, although this attachment doesn't fix absentmindedness, it does last a very long time. And, because the straps and cushions fit so much more ergonomically than the factory strap, I really don't feel as much fatigue from the extra weight as I imagined I would. The adjustment knob in the back seems durable... I just hope it lasts as long as the battery, because the headset would be rendered completely...