Re: Best Vmp for use with SolarBoost 2000E
My hunch is, and Niel and Bill will correct me, but I don't think it is going to make much difference with the system you describe. Since the Vmp of both panels is the same, the controller will handle that voltage and convert it based on the battery voltage. I think that BlueSky is suggesting that you would get maximum MPPT advantage with a bit higher Vmp but the marginal difference in your small system would almost be too small to measure.
PS. The panel specs you list convert to almost identical wattage output. The one has higher voltage/lower amperage, the other the reverse. In the net/net, the higher the voltage the more "headroom" the controller has to use to convert MPPT efficiency.
Last edited by icarus; January 31st, 2009 at 8:07 PST.
Please note, being a moderator does not add any weight to my opinions 300 watts Siemens/BP panels,plus a Sun 90,, making ~400. ~30 amps into Rogue MPT-3024, 450 ah of Trojan T-105, Morningstar ts300 inverter, a Tri-Metric meter.a collection of antique generators, plus 2 Honda eu-1000i's (also a BS2512 IX controller) and assorted other stuff!