A-A-50619 Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid) 6 Colt, 780 Ampere-Hour, Type 6V-S-780 AhThis Commercial Item Description covers a 6 volt, 780 ampere-hour sealed, valve-regulated lead-acid (VRLA), storage battery with a low rate and deep discharge duty cycle for use in Naval surface ships.