Shure SB900

The SB900B is Shure's lithium-ion rechargeable battery for its professional wireless and personal-monitor transmitters, a drop-in replacement for a pair of AA cells that pays for itself over a touring or install season. Beyond simply powering the gear, it reports remaining runtime back to compatible transmitters and receivers in hours and minutes, so an operator can see exactly how much show is left in each pack instead of guessing.

The cell recharges in Shure SBC-series docking and networked chargers, in or out of the transmitter, and is compatible across a wide swath of the Shure line including Axient Digital (AD1/AD2), ULX-D, QLX-D, the UR5 receiver, and the P3RA, P9R, and P10R personal monitor packs.