Firefly batteries use Microcell Carbon Foam to deliver a longer service life, increased energy efficiency and better performance under extreme conditions. The Firefly carbon foam technology resists sulfation and corrosion, the primary causes of failure in lead-acid batteries. For boaters, this means that the battery can be left in a partial state of discharge (i.e. extended cruising, sitting on a trailer or at a dock without power) and it will not lose any permanent capacity.
Firefly Group 31 12V 116 Ah Battery
Dimensions are 13.4 L X 9.4 H X 6.8 W inches or 340mm L X 238mm H X 172mm W
Weight is 74 lbs or 33.5 kg
30% DOD = 9,000 cycles, 50% DOD = 3,600 cycles or 80% DOD = 1,000