hello, here's what i want to do, i have a load that operates for 24 hrs and consumes 10W (24v). i connect two 12v 15Ah lead acid batteries in series and connect these batteries in parallel with a solar panel (30W 17V with a solar shunt regulator). my question is, is my setup correct? will this be sufficient for 24hrs of operation? or is this an overkill? will it fully charge the batteries during daylight? any comment would be much appreciated.. thanks..