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.