EcoTech Marine VorTech Battery Back-up is designed to provide backup power for VorTech pumps during power outages, preventing fish and corals from dying in the tank. It comes housed in a durable aluminum casing and offers 36 hours of power for MP40w pumps and up to 72 hours for MP10 and MP20 models. This essential tool ensures seamless operation in aquatic environments by keeping the flow consistent and easy to connect with a trickle charger.