Hi,
I was home alone today which happens very rarely lately, pandemic and consequences. So, iIt was very quiet. I heard noise like (but not exactly) beer bottle opening or something other bubbly leaking form the bottle or opening water faucet a little for a very short time. I started to look around. I found out it was wall clock making the funny noise. The liquid on the battery negative seem very fresh. Is it possible I heard battery leaking? Or, more probable is clock made dying sounds? Clock has stopped few days ago already. Battery was 0.7 volts.
Veiksmi,
Jānis