MK 8L-16 Flooded 6-Volt Deep Cycle Battery East Penn's version of the L-16 flooded battery features Flag Terminals and a heavy-duty polymer case. MK 8L-16 batteries are made in the U.S.A. Cycle life is 825 cycles at 50% depth of discharge. This is one of the most economical deep-cycle lead-acid batteries available, yet still has consistent quality construction. Made in USA.