The Shure SB906 is a rechargeable Lithium-Ion battery designed for use with the neXt 2 MXW1X Hybrid Bodypack or MXW6X Boundary Microphone/Transmitter. The battery is identical to the one originally included with these conferencing mics and provides up to 17 hours of operating time, depending on settings and use conditions. The battery supports docked charging in the MXWAPXD2 Access Point Transceiver, allowing you to leave the battery inside the mic for a quick and easy recharge. Charging time is 4 hours.