High-capacity replacement battery designed specifically for Apple iPod 3rd Generation Classic models. This 850mAh battery restores full functionality to your device, delivering extended playback time for music and audio content. Compatible with iPod A1040 and uses the original 616-0159 specification. Perfect for reviving older iPods that have experienced battery degradation. Easy installation for users comfortable with device maintenance. Breathe new life into your classic Apple device with this reliable power solution.