Hi All, I am not an engineer or have the brains to ever be one either.. I have (possibly) a simple question relating to the exact amount of power (Battery)required to elevate water (50 liters) 3 meters. Would one be able to obtain some or other peace of equipment that would provide you with an exact reading of a battery's power before and after the elevation had for instance been completed? E.g. Before 100% and after 93.37% Then are batteries considering eventual wear and tear to such development standards, on the level to produce exact same usage results time and time again? Thanking you in advance.. Yolanda.