Amazon offers its Prime members the Eneloop 1500 Ni-MH Pre-Charged Rechargeable AA Battery 8-Pack, model no. SEC-HR3U8BPN, for $16.98 with free shipping. (Non-members can spend over $35 to qualify for free shipping; otherwise, shipping adds $5.74.) At $2.12 per battery, that's pennies under our March mention and the lowest total price we've seen. (It's a current price low by $6.) These 2,000mAH AA batteries are precharged and can be recharged up to 1,500 times.