Anybody use a 12 volt battery on their hellfire

[Fishnbum]

I was told by a foxpro tech I could use one of the small 12 volt rechargeable batteries for a power source instead of the rechargeable AA batteries. This one of the sealed batteries like a security system or some game feeders use them. Anybody using an alternative battery on their caller? I’m using the hellfire with an extra sp60 speaker with volume wide open for long set ups crow hunting