A-A-50617 Battery, Storage (Portable, Sealed, Maintenance-Free, Lead-Acid) 6 Volt, 200 Ampere-Hour, Type 6V-S-200 AhThis Commercial Item Description covers a 6 volt (normal and reversed), 200 ampere-hour sealed, valve-regulated lead-acid (VRLA), storage battery with a high rate and shallow discharge duty cycle for use on Naval surface ships.