Amazon offers the Duracell Pre-Charged Rechargeable AAA Batteries 4-Pack, model no. AAA-RCHG-STAYx4, for $5.74 with free shipping via the directions below. That's a buck under our July mention and the lowest total price we could find by $3. To get this deal:

1. View the Duracell Pre-Charged Rechargeable AAA Batteries 4-Pack for $9.20
2. clip the $3 off coupon on the product page to drop it to $7.28
3. add it to your cart via Subscribe & Save to cut it to $5.74

Be sure to cancel Subscribe & Save after your order ships, or you'll be billed for subsequent shipments.