11.1V, 3400mAh, Li-ion Battery fits Canon, 1d Mark 3, 1d Mark 4, 37.74WhBattery Fits Models: 1d Mark 3, 1d Mark 4, 1ds Mark 3, 1dx, 540ez, 550ex, 580ex, 580ex ii, Eos 1dx Mark 2, Eos 1d Mark Iv, Eos 1d Markiii, Eos 1d X, Eos 1ds Mark Iii, Mr 14ex, Mt 24ex Battery Part Numbers: Lp e4n The products we supply are exceptionally well designed; they use only the best quality parts and are built with safety as a priority. They are designed to be as durable as the original version of this product. Canadian Batteries have supplied