Features: 
1) Rechargeable CR123A Li-ion battery with 3.0V working voltage and 900mAh 
    capacity
2) Ryder RCR123A can be recharged up to 1,000 times, 1 RCR123A Li-ion = 1,000 
    CR123A primary cells 
3) Replaces the most of CR123A primary lithium battery for digital cameras and 
    flashlights 
4) Internal voltage regulators  
5) Modified voltage to achieve 3.2V at full voltage; once loaded, cell voltage drops
    to 3.0V
6) Dimensions (D x H): 16 x 32mm
7) Weight: 17g or 0.6oz.