The Shure SB900B Rechargeable Battery is a robust, high-performance lithium-ion battery designed to provide reliable power for Shure wireless systems, including ULX-D®, QLX-D®, Axient® Digital, PSM® 300, and PSM® 900/1000. Offering up to 12 hours of continuous usage on a full charge, it ensures extended operation for professional audio applications. The SB900B features quick charging capabilities, with 50% capacity achieved in just one hour and a full charge in three hours. Its intelligent battery circuitry provides accurate runtime tracking and status reporting via compatible Shure devices, minimizing the risk of unexpected power loss. Designed for durability, the SB900B withstands rigorous use in live performances, broadcasting, and installations while reducing waste and costs compared to disposable batteries.