Amazon offers the Duracell 4-Count Rechargeable NiMH AAA Batteries 2-Pack (8 batteries total), model no. DC2400, for $12.09 with free shipping via the directions below. That's pennies under our January mention, $1.51 per battery, and the lowest total price we could find for this quantity by $14. To get this deal:

1. View the Duracell 4-Count Rechargeable NiMH AAA Batteries 2-Pack for $15.99
2. clip the $1.50 off coupon on the product page to cut it $14.49
3. add it to your cart via Subscribe & Save for a final price of $12.09 with free shipping

Cancel Subscribe & Save anytime, even immediately after ordering, otherwise you'll be billed for subsequent shipments.