SB900B Rechargeable Li-ion Battery Professional-grade power solution for Shure wireless systems. Core Features: ✓ 10-hour continuous operation with 1240mAh high-density NMC cells ✓ Universal compatibility with ULX-D/QLX-D/AD transmitters & P3RA/P9RA+/P10R+ receivers ✓ Tour-ready durability - IP54-rated rugged housing, 1000+ charge cycles ✓ Advanced safety - UL/IEC-certified with overcharge/overheat protection Key Specs: ・Voltage: 3.7V DC ・Charge time: 2.8-4hrs (varies by charger) ・Operating temp: -20°C to 60°C ・Compliance: FCC/CE/RoHS/UN38.3 Ideal for live sound, broadcast, and installed AV systems requiring reliable wireless power management. Includes 1-year professional warranty.