Replacement for old Solara SM225M flexible solar panels

jms28

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Hi all,

We had 4 x Solara SM225M mounted on the front of our Cranchi Mediterranee 40 for many years. Two of them obviously broke down and have already been removed, but the other 2 are still working fine. The two broken ones were mounted years before and were also of a different generation I think, hence the big difference in their condition (before the question comes up).

20190813_195139.jpg 20190813_195202.jpg

In any case, we're now looking for suitable replacements. The SM-Series is no longer being produced and both the M-Series and Power M-Series have very different dimensions unfortunately (current panels have approx. 80 x 64cm/ each). I would actually prefer sticking to Solara, but the new measures could make this rather difficult if I chose to only replace the two broken ones. So my first question is: Does anyone recommend other manufacturers of flexible solar panels that might be worth looking into, both re size and quality?

Alternatively, I'm thinking if I should try to carefully remove the working ones to use elsewhere, e.g. on the roof of a Golf Car we have to keep the bats afloat or as a semi flexible solution on the roof of the boat, if and when needed. But that could get tricky without damaging them. Still, I'm quite tempted to give it a try and then replace the entire system with something like 3 x Solara S525M35 panels from their newest Power M-Series generation. Placed next to each other horizontally, that would more or less cover the exact same area: 163.5 x 125cm VS. 160 x 128cm. The obvious advantage would be the sizeable difference in power output and the the uniform look! On that occasion I would also like to fix the deck, as is obviously looks HORRENDOUS at the momento_O Meaning, cleaning and polishing the underlying polyester surface and install the cables etc. properly this time (I love my father, but...;)) On that note: am I the only one questioning whether it's a very good idea to install solar panels directly on the deck? They obviously get quite warm in the sun... Did you guys prepare the underlying surface in any way before mounting?

What do you guys think?

Many thanks in advance!
 
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Not sure about fully flexible panels.
AFAIK there are three types of panels:-
Flexible
Semi Flexible
Domestic style rigid panels.

As I understand it, the best for performance are the Domestic Rigid style but these would look awful on a boat.
All the flexible stick on panels that I've seen have failed fairly quickly and not been worth fitting.
Semi flexible are manufactured onto a thin sheet (3mm) of GRP.
Not as efficient as the rigid domestic panels but seem to be much more robust than the fully flexible ones.
I have been using semi flexible panels from Photouniverse - 4th season now and still going strong.
The ones I bought are manufactured on a GRP sheet and came with an adhesive backing so it was easy to peel the backing off and apply.
These are the ones I bought (4 of them) :-
12V solar panels charging kits for caravans, motorhomes, boats, yachts, marine
Note that NOT all Photouniverse's panels have a sticky back peel off.

Also make sure that you get a good MPPT controller - the best, IMO, is Victron's latest - they have made them even more efficient in their latest versions.
Don't waste money on cheap controllers.
Wiring is important - install the correct sizes to ensure that you don't get too much loss in the cables.
Also check the voltage levels - the Victron MPPT needs 5v more than the battery bank voltage before the controller will start.
I'm getting about 3Kw hours per day in the summer from 4 off 150w panels.
 
They are evolving at a massive rate and what is at the top today will be at the bottom next week so careful research is required before you even contemplate buying, and to reitterate Hurricane's point, the controller is critical for good performance so get the best you can.
 
Alright, works for me. I was just hoping for more replies tbh... :rolleyes:

What about foldable solutions? Anyone experience with them? CAN they be as good as semi-flexible ones? Clear advantage would be the possibility to store inside over the winter and that there would be no need for a permanent installation at the front.

Thanks
 
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