Dell.ca has 8 packs of Panasonic Sanyo Eneloop AA or AAA Batteries on sale for $19.99 right now (save $18 off). The batteries also ship for free.

Product Details

• Maintain 75 percent of their charge after 3 years of storage
• Can be recharged up to 1,500 times
• Pre-charged and ready to use right out of the package
• Work in extreme temperatures down to –4°F
• Provide long lasting power at a cost of only 4¢ per recharge
• Pre-Charged using power generated from solar energy
• No memory effect – batteries can be recharged when fully, or partially drained