The Shure SB903 is a rechargeable lithium-ion battery designed specifically for SLX-D Digital Wireless Transmitters. Offering up to 8 hours of continuous runtime, the SB903 provides a reliable, cost-effective alternative to disposable AA batteries, reducing long-term operating costs and environmental impact. With accurate real-time metering when paired with SLX-D systems, users can monitor battery life down to the minute for confident performance during presentations, events, and live productions. Engineered with Shure’s trusted durability, the SB903 ensures consistent, rechargeable power that meets the demands of integrators, rental houses, and professional audio users.

Always fully charge a new battery before first use. To fully charge a new SB903 battery, it must be placed directly in the charger. After the first charge, the battery can be charged by docking the transmitter in the SBC203 dual-bay charging station.