$55.99 AA Ni-MH 600mAh Rechargable Batteries for Solar Powered Units (12-Pack), 1.2-volt 600mAh Ni-MH 
3.6 Volt Lithium Battery With Leads - 3.6 Volt NiMH Battery Pack (1200 mAh) with Leads | eBay 
Omnicel ER14250 (LS14250) 1/2 AA 3.6 Volt Primary Lithium Battery (1200 mAh) + Free Shipping 
