Lots of options and lots of info on google, you can even google "stus list: solar panel" and find old list threads. I did want to chime in and say that solar is the best. I am never plugged into shore power unless we're cruising and spending a night at a marina and that's more for the laptops, cameras, etc than it is for the boat. We don't have a lot of demand (no fridge, AC, etc) so our little 65 watt panel does us well. Consistently over 3 amps, 3.5 max, it's located on top of the bimini. Two Trojan T-105s make up the storage. Setup serves well.
Steve Suhana, C&C 32 Toronto On Sat, Sep 17, 2016 at 3:04 PM, Marek Dziedzic via CnC-List < cnc-list@cnc-list.com> wrote: > I have very similar (consistent) results, even though I am much further > north (45 °). > > > > I have a 24 W panel and I get a maximum charging current around 1.1 -1.3 > A. My maximum charge per day is much less, but my batteries are never that > empty. I think that the maximum I ever saw was just under 10 Wh in a day. > This is certainly enough to keep the batteries healthy. > > > > My solar panel is a flexible one that I put on the bimini. There is always > some shading (a least, the backstay), so the efficinecy is not the best. > > > > This is with an older model of Morningstar, but it has a digital charge > monitor, so it tells you what is (and was) going on with the solar charging. > > > > If you use refrigeration or generally, have big power budget and big > batteries, you need much more solar power (150 W or more). > > > > Marek > > Ottawa, ON > > > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Josh > Muckley via CnC-List > *Sent:* Saturday, September 17, 2016 14:02 > *To:* C&C List <cnc-list@cnc-list.com> > *Cc:* Josh Muckley <muckl...@gmail.com> > *Subject:* Re: Stus-List Solar panels > > > > Genasun is pretty much the agreed best engineered MPPT controller though > they don't do higher current. They have varying options for battery > chemistry and wattage. If genasun is what you use then you'll basically > have to plan on one controller per panel which is great for reliability and > redundancy but may not be so good on your pocket book. They also don't > have digital volt/amp/watt outputs so you'll probably want to look at > getting one. Genasun also offers a boost feature which allows a solar > panel that outputs less than the battery voltage to charge the battery. > Otherwise you'll have to ensure the panel voltage is greater than battery > voltage and they won't start/stay charging in the morning or in the evening. > > Just to talk numbers for a minute. My experience is that a 100 watt > monocrystaline flexible panel mounted horizontally at a geographic latitude > of 38° yields a max of 66 watts in the peek summer sun. I get about 4 or 5 > amps peek charge current but only at peek sun. IIRC I get a cumulative > ~900 watt-hours per day. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > like what we do, please help us pay for our costs by donating. All > Contributions are greatly appreciated! > >
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