You say they run on 9 volt batteries? I would toss um in the garbage and replace with another brand.
And Dutch, we've already been down the fart road
__________________
Tony & Donna
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide