Lectrosonics 2-Person SRc Wireless Omni Lavalier Microphone System Kit for Standalone Use (A1: 470 to 537 MHz)

You would need SR9VBP to be able to run this on a 9V battery. https://www.bhphotovideo.com/c/product/663969-REG/Lectrosonics_SR9VBP_SR9VBP_9_Volt_Battery.html

This is a slot in receiver which means it will not connect to a battery directly. Instead it will feed off the camera power/battery or through other slot systems. If you don't already have a slot-in system, this is most likely not the right system to suit your needs.

In the box is the receiver, a wall mounted power supply, and 2 antennas. The bottom plate, which is selected according to the way it will be used, must be ordered separately. For example, for a Panasonic camera you need to order an SRSUPER plate. Please see the Lectrosonics website for a list of available bottom plates.

The receiver accepts from 6-18V d.c. @1.4W, so it is compatible with most any battery or DC supply system. The connector is an LZR threaded locking plug. Our PS200 cable goes from a Hirose to LZR so that might help. (You didn't state what type of connector is at the supply side). Also - and very important: you must order with the receiver a bottom plate that is suitable to your application. If the receiver is not being used in a camera the most commonly used plate is the SREXT. This gives you both audio channels out on TA3 connectors and the LZR power input port.