Batteries

OK, so sometimes I'm an idiot. I hope it never happens to you, it's very embarrassing.

I've bitched about trying to make a bluetooth remote control work, and blaming the technology.
But now there's new evidence that none of all the batteries I tried in it were entirely fresh, and when it got totally fresh batteries, voila, it works fine.
My bad.
Maybe the moral is, don't save half-used batteries.