This is the second trash can we buy for our kitchen; we use one for recyclables and the other for regular trash.  We use batteries for one trash can and the other has an AC power adapter.  We have not changed batteries from the first set we put in around end of April 2013.  The only inconvenience with having the AC power adapter is that you have to disconnect or remove when emptying the trashcan.  Other than that, both cans are perfect.  Oh, they can be wiped cleaned very easily and keep on the soft stainless steel shine they have.