Zipp Battery manufactures RBC7 24V 18AH UPS Power Back Up Supply - Complete Battery Kit (includes wire harness), also known as RBC batteries. These RBC battery packs are designed for use as a back-up power source in most UPS systems. RBC batteries are maintenance-free, valve regulated, and rechargeable AGM Sealed Lead Acid (SLA) batteries. Each of these RBC battery packs is constructed with lead calcium alloy and absorbed glass mat technology, which allows for a completely 'maintenance-free' operation. No Spills, No Leaks & No Water to Check, Complete with Harness and Connectors, Longest life-cycle product on the market. This maintenance-free design allows for the most powerful, highest amp hour capacity. Fiberglass mat separators and high cell compression extend battery life by delivering superior vibration resistance from extreme conditions. All Zipp Battery RBC battery packs are manufactured with the highest quality materials and rigorously tested to ensure safety, OEM compatibility, effectiveness and optimal performance. Top notch Customer Service and Satisfaction is our top priority at Zipp Battery. All returns or exchanges are handled with our '60-Day No Questions Asked Money-Back Guarantee', Affordable Pricing, 18 month Warranty, Midwest location in the heart of America (Indiana), All orders placed by 3pm (EST) will ship same day, Extremely fast shipping (2-4 Business Days). Zipp Battery strives to provide every customer with an exceptional buying experience and top quality batteries at unbeatable prices. Thank you for choosing Zipp Battery for your battery purchase; your business is greatly appreciated.