Battery in Cutlass guitar

Hello Everybody ! I bought a used 2017 cutlass guitar and it did not come with any information.I notice that it uses a battery.So I went on the website and it say’s the guitar will function with or with out the battery but the silencing circuit will not function.So guess what, I was playing live at my church and the sound died.The sound person eventually had the volume slied all the way up,no sound .I put in a new battery and it works.Help me out please.Thank You.