This is one of my favorite ways to stock up on batteries. This week at Staples, you can buy Duracell AA or AAA batteries 16 pack and get 100% back in Staples rewards to use on a future purchase. You can also use Duracell manufacturers coupons when you purchase for an even better deal. There is a $1/1 Duracell Coppertop batteries coupon in today's P&G insert. Limit of (2) 16 packs.