Banshee marine batteries are produced and manufactured using only the most up-to-date materials. Our group 27 marine battery is rugged, powerful, and resilient, and should be the only battery you rely on for cranking, igniting, and lighting. Banshee Marine Sealed Deep Cycle batteries provide superior high integrity and reliability. They are specially designed for frequent cyclic charge and discharge. By using strong grids, thick plates, and especially active materials, these batteries are designed for repeated deep-discharge applications. The Banshee Marine Sealed Deep Cycle batteries offer 30% more cyclic life than standby series batteries. They are suitable for solar and wind renewable energy storage, RVs, and marine applications.