UPDATE: I just scored my FREE batteries (pictured below). Even though my coupons didn’t scan the nice, young lady at the register just typed in the code number, which are the same, below the bar code of each coupon and boom, $1 off.
Simply print the coupon below and take it to your local Target. Apparently, these batteries can be found at the “$1 Spot” right when you walk in or near the cash registers.

(Valid 3/31/2010)