Purchase between $50 and $200 or more worth of Duracell products and get a $10, $25, or $50 Gift Card for free via this mail-in-rebate. (The amount of the gift card depends on the amount of your purchase.) Better still, any Duracell battery purchases made at almost any store dating back to January 1 can be included to add up to the $50 minimum needed to receive a gift card. That's better than our October mention (which maxed out at a $25 gift card), and the best tiered deal we've seen on Duracell products. Some restrictions apply. Deal ends March 31. The gift cards expire October 1.