Airpods Don't Warn About Low Battery

I had the first gen Airpods for years and absolutely loved them. When one got down to 10% I would hear the low battery warning, but still had plenty of time to finish what I was doing before recharging. Eventually, the battery life degraded too much and I upgraded to the second gen Airpods. On the new ones I only get the low battery warning as they are dying. Is this by design or are my new ones buggy? I would really like to get the warning while there's still some juice left.