This NP4-12 Series Yuasa Battery is a 12 Volt, 4 Amp Hour Battery with F1 Fast-on (.187") Terminals. Yuasa Battery is a premier manufacturer of Sealed Lead Acid Batteries. Since 1979, they have been providing reliable back-up battery power for a variety of applications, including security, uninterrupted power supplies (UPS), telecommunications, emergency lights, and medical equipment.