This 12 V emergency battery backup for a sump pump system by Flotec is designed basement flood protection. It is made of black submersible thermoplastic. It operates automatically during power outage or if primary pump fails. It can pump up to 11,000 L in one power outage and can empty one sump pump 1000 times with the same battery charge. It has a charger approved for ul/cul calculus. It is connected to a highly sophisticated computer system for maximum security. It supervised the pump and activates automatically if needed.Battery sold separetaly (models BAT40 or BAT75). It comes with a one-year manufacturer warranty.