Nikon Coolpix S3 Digital Camera Battery (850 mAh) - Replacement for Nikon EN-EL8 Battery Replacement battery for the Nikon ENEL8, Lithium-Ion (Li-ion) 3.7V (850mAh) 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark