Sony NEX-FS700UK Camcorder Battery Lithium-Ion (6900 mAh) - Replacement for Sony NP-F970 Battery Replacement battery for the Sony NP-F970, Lithium-Ion (Li-ion) 7.4V (6900mAh) 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark