I thought they had got rid of these...
So now if you want M$ rechargeable batteries, you have to get the £45 controller with the play and charge kit which means that the controller with a charger is £60 (from the M$ store)
I know you can just use AA batteries and it avoids having to plug the controller in, but I just think that a battery pack is just the best bet. I have changed PS3 controllers over this generation, but due to me wanting new controllers not the battery pack dying down.
I have the charging hub thing for my 360, which was probably a little silly, but I guess it does the job. but I personally still find this really annoying