View attachment 56551
OK, I stacked the PS on top of the bank of batteries to get the PS display and all 4 connectors in the pic. My on-hand wire choices in stranded were 6 and 16ga. I chose the 16ga which is rated for 10A. You can see I put ring terminals on both end of the wire, i.e. I am not using banana plugs.
Here is where the mysterious lack of charging takes another turn.
To recap, the voltages were 3.3 from factory, 3.36 after individual cell charging, and 3.40 after 9 days charging as a bank. Guess what. After I made the changes to the wiring yesterday and charged the batteries for another day with the new wiring, the voltage DROPPED to 3.38. I checked the first and last cell in the battery bank to make sure just the last cell (used for all measurements) wasn't wonky.
The PS showed 3.65V, 1.78A and 6.5W yesterday and per the picture, it is now 1.75 and 6.4. So even though the battery bank dropped voltage, the charger is putting out even less.
I hadn't measured resistance. What two points do you want the resistance measured across? I didn't know there were any connections or wire distances involved here to get a voltage drop.
Thanks