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. These 2,000mAH AA batteries are precharged and can be recharged up to 1,500 times. A must have for any photographer for their camera gear or even for normal household need.