Zoeller Aquanot Flooded Maintenance Free Batteries feature a proven flooded battery battery design. It comes with advanced features like SolidCast plates, PosiWrap plate separators and oversized top-lead. The terminal post connections provide durability and efficiency in a standby back-up pump applications. Additionally, the battery is super easy to install and inspect. Aquanot batteries are purpose-built backup power solutions that work precisely with Zoeller backup pump systems. The battery is designed to deliver a useful life of 3 to 4 years. When Zoeller battery backup sump pump is called on to perform, you don't want the battery to be the weak link! Features: Built for applications where reliable maintenance-free service is a requirement Designed with a 3 to 4 year service life in mind 3-year limited warranty: this model comes with warranty coverage from Zoeller Pump Company, giving you extra protection and more peace of mind