Battery B, 1st New Jersey Light Artillery was an artillery battery that served in the Union Army during the American Civil War.
The battery was organized at Camp Olden in Trenton, New Jersey and mustered in for a three-year enlistment on September 3, 1861 under the command of Captain John E. Beam.
The battery was attached to Hamilton's Division, Defenses of Washington, to March 1862.
Artillery, 3rd Division, III Corps, Army of the Potomac, to June 1862.
Artillery Reserve, III Corps, to August 1862.
Artillery, 2nd Division, III Corps, to January 1863.
Artillery Brigade, III Corps, to March 1864.
2nd Volunteer Brigade, Artillery Reserve, Army of the Potomac, to May 1864.
Artillery Brigade, II Corps, to June 1865.
Battery B, 1st New Jersey Light Artillery mustered out of service June 16, 1865.
Peach Orchard and Savage Station June 29.
White Oak Swamp and Glendale June 30.
Moved to Washington, D.C., and duty in the defenses of that city until November.
Operations at Rappahannock Bridge and Grove Church February 5–7.