Digipower BP-FS11 Replacement Li-Ion Battery for Sony NP-FS11 InfoLithium Rechargeable Battery Pack Built-in microprocessor accurately calculates remaining power within minutes Up to 65 minutes of continuous recording time with viewfinder 3.6V 4.1Wh (1140mAh) with no Memory Effect May be suitable for use with additional existing or forthcoming cameras, as specified here or by manufacturer