New SB904 lithium-ion rechargeable battery makes powering GLX-D+ wireless systems easy. With up to 12 hours of runtime and accurate metering in hours / minutes, the new GLXD+ batteries can be charged directly on the receiver, via optional sled charger, or via USB-C connector on the handheld microphone or bodypack (sold separately). A quick charge feature allows for 1.5 hours of usage from a 15 minute charge.