My sennheiser earbuds are now down to 15 minutes of battery life. Less if it's a cold day. Sure, they're not completely dead yet, but they're effectively useless. And it's not like I can easily replace the batteries. Most wired earbuds or headphones at a similar price point have replaceable cables.

My daughter had to replace the LiPo battery in her headphones twice after they would not charge at all.