Hello ? Why would Sennheiser plan a recall, or have any opinion at all about a problem that they do not know exists.
Every single person in this thread has spent several times as much time speculating about the problem, then it would take to simply call them and ask about it (or email).
Since no one has done that, Sennheiser is obviously not aware of a problem.
By the way, the battery issue is the perfect example of a problem that a) is not a defect, and b) requires the user to get some input other than just using the product.
I remember that Dish Network had a big problem with people returning remote controls, when the problem was dead batteries (evidently somewhere along the line, sealed "old stock" batteries ended up in the boxes). They eventually added low battery warning software to the receivers, just to avoid the cost of perfectly good remotes being returned.
By the way, don't misunderstand me... people returning perfectly good products - rather than calling tech support - is a really great thing. As a result, I am right now listening to a perfect pair of RS180 headphones "factory refurbished" with full warranty for US$150 less than the new price. So, very soon, your perfect condition RS220s should be available "factory refurbished"...
Edited by kstuart - 2/29/12 at 5:05pm