The following is taken from New York in the War of the Rebellion, 7th ed. Frederick Phisterer. Albany: J. B. Lyon Company, 1912.

This battalion, four companies, A, B, C and D, was organized at Sackett's Harbor; received its numerical designation September 16, 1862; was ordered in the field September 17, 1862; Companies A, B and C served near Washington, D. C, and Company D at Fort Schuyler, New York harbor; the battalion was discontinued December 31, 1862, its companies being transferred to the 10th Artillery as Companies H, I, K and L, respectively.

The following is taken from The Union army: a history of military affairs in the loyal states, 1861-65 -- records of the regiments in the Union army -- cyclopedia of battles -- memoirs of commanders and soldiers, Volume II: New York, Maryland, West Virginia and Ohio. Madison, WI: Federal Pub. Co., 1908.

Seventh Battalion Heavy Artillery.—This battalion, known as the 4th battalion Black River artillery, was organized at Sacket's Harbor and left the state on Sept. 17, 1862, Cos. A, B and C serving in the defenses of Washington and Co. D at Fort Schuyler> N. Y. harbor, until Dec. 31, when it was discontinued and assigned to the 10th N. Y. artillery as Cos. H, I, K and L, respectively. (See 10th artillery.)