I have essentially the same question as this. In that question, it seems lithium batteries are prohibited for use in the device because it wouldn't adequately warn the user that the batteries need to be changed. I'm finding the same anti-lithium-battery warning in a cheap multimeter (Gardner Bender GTD-311 if it matters). It seems to me it wouldn't matter much if thing thing suddenly ran out of battery power and needed a new one. It's not a device for alerting homeowners of imminent danger. So, do I really need to seek out alkaline batteries for this device?
These are the type of battery I'm talking about: