I’m pulling my hair out in this one. I did industrial electrical work for about 30 years: 480 3 phase through various DC control voltages. I understand the way it works. My smart charger was stopping the process. I now have a 12 volt 120VAC to 12VDC converter. It is basically a battery tender/charger. Clean positive steel (mower blades) and good connections. Arm & Hammer wash soda, the target, negative, item has been cleaned for good connection at both ends. Here’s what I get via my Fluke meter: 14.2VDC checking between water and positive connection. Great bubbles & some cleaning. If I try to adjust the piece so it is submerged better, I get around 1.4VDC and the charger won’t kick into charge mode. With charger unplugged, I have no continuity across the water. Is that due to too little soda? Normally water is not good continuity probe to probe.