VMAX MR127-100 12 Volt 100Ah Group 27 Deep Cycle Battery. Heavy duty AGM battery made with special plates and top of the line plate separators. Superior performance and unmatched deep cycle capabilities. AGM Electrolyte Suspension System. Custom Built Military Grade Alloys. Fast Charge Delivery Capabilities. Extremely Low Self Discharge Rate. Safe to use in small areas, no spills, no toxic fumes. Extreme Vibrations, Heat and Weather resistant. Sealed Non-Spillable