Shure SB904 SB904 lithium-ion rechargeable battery with up to 12 hours of runtime.

The SB904 is a lithium-ion rechargeable battery for GLX-D+ wireless transmitters, providing up to 12 hours of runtime with metering reported in hours and minutes. It charges directly on the receiver, in an optional sled charger, or through the USB-C connector on the handheld or bodypack transmitter. A quick charge feature gives about 1.5 hours of use from a 15 minute charge.