Newegg offers 20 Panasonic eneloop AA Rechargeable Batteries for $36.94 with free shipping via the steps below. That's $1.85 per battery, the lowest total price we could find for this quantity by $13, and the best per-unit price we've seen for eneloop AA batteries. These batteries can be charged up to 2,100 times. Deal ends July 12. To get this deal:

1. add the Panasonic eneloop AA Rechargeable Batteries 16-Pack to cart for $42.95
2. add the Panasonic eneloop AA Rechargeable Batteries 4-Pack to cart for $13.99, $56.94 total
3. apply coupon code "CITIWALLET" and checkout via MasterPass to drop the price to $36.94