Today only, Deal Genius discounts a selection of Duracell batteries, as listed below. Coupon code "LOYAL5" takes an extra 5% off. With free shipping, each is at least $3 off the lowest total price we could find for such a quantity. The deals, with prices after coupon:

• Duracell 9-volt Coppertop Batteries 6-Pack for $9.49
• Duracell AA Coppertop Batteries 40-Pack (pictured) for $12.30
• Duracell AAA Coppertop Batteries 40-Pack for $12.30