This CTA digital battery replaces the Sony NP-FP50 digital camcorder battery. It was designed to meet or exceed OEM specifications and is 100-percent compatible to the original equipment chargers. Power up with huge savings from Overstock.com. Specifications: Chemistry: lithium-ion Voltage: 7.2V mAh (capacity): 800mAh Memory effect: no For use with the following Sony camcorders: DCR-HC20/DCR-HC30/DCR-HC40/DCR-HC65 DCR-HC85/ and all similar models