Purchase $100 or more worth of Duracell products and get a $25 Gift Card for free via this mail-in-rebate. Better still, any Duracell battery purchases made at almost any store dating back to October 1 can be included to add up to the $100 minimum needed to redeem this gift card. That's the first such deal we've seen on Duracell products. Some restrictions apply. Deal ends December 30.