Go here to the Rayovac Bonus Site and enter the code 74016761 to access the $1/1 Rayovac coupon. You do have to type the code in because it will not accept it copied and pasted. This coupon is a PDF so it can be printed multiple times, but it also states only one coupon per transaction. It's been reported that some of the Target's have Rayovac batteries in the dollar spot section. Free batteries are always nice!
According to Deal Seeking Mom, Rayovac has been contacted and is fine with this code & coupon being posted since it's a part of their bonus program.