Adorama offers the Sony Cycle Energy NiMH 2000 mAh AA Rechargeable Battery 8-Pack, model no. NHAAB8KN, for $13.99. With free shipping, that’s the lowest total price we could find by $8. They feature a 7-hour charge time.
Also available is the Sony Cycle Energy USB Portable Lithium-Ion Power Supply and Adapter, model no. CP-AL, for $14.99 with free shipping. That’s the lowest total price we could find by $4. It’s compatible with USB-based electronics such as mobile phones, MP3 players, and portable game consoles.