Powersonic 6 Volt 4.5 Ah F1 Terminal Emergency Backup Battery is part of Powersonic's PS range of sealed lead acid batteries, also known as VRLA batteries, designed specifically for general purpose and standby applications. This 6 Volt 4.50Ah battery delivers excellent performance across a variety of uses, including security and fire systems, medical devices, emergency lighting, and UPS systems. Each Powersonic battery undergoes rigorous quality controls throughout the manufacturing process to ensure consistent reliability and long-lasting power. Model Number: PS-640