Can you put a fully charged set of batteries in 1 of your valves?
And, if possible, can you put a very close to dead set of batteries in another valve?
I’m close to wrapping this up. What I’m working on now is converting their raw battery levels to a scaled percent value between 0% & 100%. I do not know the min & max raw values for their valve. The fully charged reading is probably the one I’m more interested in. You already have 2 that are in the low’ish range so I have a pretty good idea where its bottom is.
Don’t worry about putting too much time into this. If you have some batteries handy, great, if not don’t worry about it. I think I’ve got it close enough.