Amazon.com offers the Duracell Pre-Charged Rechargeable NiMH AAA Batteries 4-Pack, model no. DX2400R4, for $6.71 with free shipping via the directions below. That's $1.68/battery, pennies over our mention from April, and the lowest total price we could find by $9. (We've seen it for slightly less, but not since last summer. For comparison, these cost $16 at your local Walgreens.) To get this deal:

1. Click here to view the Duracell Pre-Charged Rechargeable NiMH AAA Batteries 4-Pack for $9.97
2. clip the $1.50 off coupon (located directly under the item's price.)
3. add the 4-pack of batteries to your cart via Subscribe & Save for $8.47
4. proceed to checkout for a final price of $6.97