@redneck joe ,
About the LiFePO4 battery . . .
> Brand and Amp-hour rating?
> With nothing connected and no charging, are you getting any voltage reading from the battery (use a DVM to test it).
> A charger with "0Volt charging" may be needed to bring them back to life. . . it looks like the charger you have should do the "0Volt" thing.
> Don't worry about 14.3 vs. 14.6 reading while charging. . . as the battery charges up the voltage should rise (absorption phase of charging)
> Your solar capacity (20 watts) is still pretty low to bring an LFP battery up after use. You may need an MPPT controller in between the solar panel and the battery.
