[email protected] wrote: > [email protected] writes: > > I also see that you can connect panels in series up to 75 volts or so > and use this unit to charge a 12V bank. > > Morningstar makes a good product but are you sure it can control 75V > down to the 14V range at x amps.. Hi, Carl,
Here's what they say: "This controller can be used for 12 or 24 volt battery systems, with panel voltages up to 75 volts (3 12-volt panels in series)." > > And by hooking two panels in series I'd double the voltage and > keep the > max current lower than a parallel configuration. > > Why would you want to do that? > If I have not forgotten to much of what I thought I knew, don't amps > charge a battery, da volts jus do the push. Lessee...95W/ +/- 15 V ( > nominal charging volts out) = 6.3A per panel. Because 95w/15V is 6.3A. If it's in series then I'd have only 6.3A, if it was in parallel, I'd have 12.6. > > That means less loss in the wire. > > Thought they suggested 10 gauge....considering that's good for 30 A. > ...How long is your wire run? I haven't measured it but it's definitely over 20 feet from the back of the boat to the batteries. Probably 30'. However I guess the question is how far to the controller. That's probably only going to be 12 feet or so, from each panel. > > > What I don't know is if one of the panels is blocked, will that > hurt the output of the other panel? > > Well each panel will probably have a diode in the output line...but > lets say you have two batteries in series 2 -12 v = 24 and if one was > 6 and the other 12 what would you have.? 18 maybe? > Now I will butt out...good luck in whatever you decide to do. > Carl HIbbard Supposedly the charge controller is a DC to DC converter with some intelligence and even if it's less than 12 volts, my understanding is it will put some, albeit not a lot, of energy into the battery. > > Thanks, Jim. _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [email protected] To unsubscribe send an email to [email protected] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
