Power-Sonic PS-1270 F1 Sealed Lead Acid Battery (also works with ATT AT-500) Looking for reliable performance from your ATT AT-500 UPS Backup? Our ATT AT-500 battery will provide you the performance and dependability that you demand for your UPS Backup. With an efficient rating of 12V Volt and 7 , you never have to worry about being too far from an ac outlet. Our line of ATT AT-500 batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility and safety to exceed original equipment manufacturer specifications. With an industry leading warranty and customer service, you can’t go wrong. ... More Info