Hello everyone, I have a turbine circuit set up linked to a 12V deep cycle battery and the Windy Nation charge controller box shows the correct green light. However, for some reason the battery voltage never seems to increase. In fact, the opposite happens; when I connect up a fully-charged battery to the circuit, the voltage drops right down to between 2V and 4V and just sort of floats around there. The voltage occasionally reaches up to 8V. I was recommended by someone to check the current using an ammeter. I have one lying around but don't know quite which part of the circuit I should attach it to. Has anyone experienced anything similar, or has any ideas of what I can do?