Profdant139... try this instead.... Wire your battery clamps to the input side of the charge controller from the solar panel, on the back of that portable solar panel. That should give you 17v with sunshine.... but you won't see that at the battery. Monitor the single battery until you see 16.0V at the terminal, on the fully disconnected battery. That should equalize one of the batteries. Swap in and perform the same procedure on the second battery. a 6 amp panel for one day in the sun won't boil off your electrolyte, not this time of year.
