Synergy Digital EN-EL15 Battery (2-Pack) Ultra High Capacity for Nikon 1 V1, D600, D610, D7000, D7100, D750, D800, D800 SLR, D800E and D810 Cameras This kit includes: Pack of 2 Replacement Rechargeable Batteries for the Nikon ENEL15, Lithium-Ion (Li-ion) 7.4V (2100mAh) These Synergy Digital batteries are fully compatible with the original Nikon ENEL15 Battery. You can rest assured that these batteries will work with your Nikon 1V1, D600, D610, D7000, D7100, D750, D800, D800 SLR, D800E and D810 Cameras, and it can be charged with the original manufacturers charger. We use only high quality Japanese cells, so you are sure this battery will last for years to come. Synergy Digital is a very high reputable company that manufactures batteries and other electronic accessories for over 2 decades, all our products come with a 3 year manufacturer warranty.