I agree that rechargeable toys are great - but they are relatively new.
Not many have yet had the unpleasant experience of your $100+ rechargeable vibe will no longer recharge.
The batteries are sealed in place (like an iPhone) - your going to have to throw it away and pony up $100+ more and hope the new one works as well as your old one - which may have been discontinued.
Just how do recycle vibrators at your local Home Depot or Target battery recycling center! Will it be a little embarrassing?