This range of Panasonic eneloop batteries have numerous advantages over regular rechargeables. Key characteristics include low self-discharge, they are pre-charged so can be used right out of the packet, and can be recharged up to 1800 times. After 5 years of storage they will retain up to 70% of their capacity once fully charged. A far more environmentally friendly option than churning through dozens of alkalines. 
Product Specifications
 
 - Recharging Voltage : 1.2V
  
 - Battery Chemical Composition : Nickel Metal Hydride (Ni-MH)
  
 - Battery usage : Rechargeable
  
 - Amp Hour Rating : 2000.0mAh
  
 - Connection Type : Nipple
  
 - Type of battery : AA
  
 - Pack quantity : 2.0pc
  
- Length : 11 cm 
 
- Width : 9 cm 
 
- Height : 1.5 cm