This product is either discontinued or we cannot get that from suppliers.
Canon LPE4N Battery Pack, Colour Black, Capacity 2450 mAH, Lithium-ion battery.
Designed to be used with the EOS-1D X, the LP-E4N is a high-capacity (2450 mAH) lithium-ion battery pack, offering approximately 10% larger capacity than the LP-E4.