A note form Jody: "Basically it has an accumulator which is pressurised with the electric pump. When it reaches pressure a pressure switch turns the pump off, but it still pumps water due to the ram pump valve workingthe same way as the pump we saw. By adjusting the pressure switch you set the height it can pump to - no problem pumping to our tank (25m approx). So the electric motor is only going 50% of the time. I'll get a low voltage switch now, so as soon as the voltage of the battery slips below a preset amount it will urn off, and vice versa, then bingo! automatically route the overflow to the veggie garden and fruit trees!!! Lush."
