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Connect or Disconnect; solar panels
Topic Started: Wednesday 11-02-2015, 11:46 (701 Views)
dieselman
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Hi Everyone,
I have just bought two 100 watt flexi solar panel that I wish to mount on the roof of my slide on camper. Does anyone know if I can keep them connected via the controller to the 120 D/Cycle battery which is also connected to my duel battery system on the vehicle? I have been told that the panels could be damaged when the vehicle is started. Is this correct?
Edited by dieselman, Sunday 3-05-2015, 08:02.
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Topcat
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Hi Dieselman,

Your controller fitted should have blocking diodes in the circuit which prevent any current flowing back
to the panels, so starting your vehicle should not damage them.
The solar panels on my vehicle are connected 24/7 & I've never had a problem with them when starting
the vehicle.
Cheers,

Ted


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www.havewheelswilltravel.iinet.net.au
"I believe that if life gives you lemons,you
should make lemonade & try to find somebody
whose life has given them vodka, & have a party"!!!!

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silverback
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And we did some rather rough starting when Teds electrics blew out at Edjudina.
All the best,
Peter
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dieselman
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Thanks Guys, that's what they said at Battery World, however Itecworld where I bought the panels said I should put a switch between the panels and controller, thanks again for clearing that up.
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Nightjar
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Dieselman,
Reiterating what Ted said, make sure blocking diodes have been fitted to your panels. They should be installed in the panel junction box.
You will not get a spike from your alternator when starting because the battery in the circuit will absorb.
Good luck & safe travels
Peter


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"Aging seems to be the only available way to live a long life."
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boobook
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I have also read that for best life a solar panel should not be disconnected when charging under load.
mike
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dieselman
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No need to worry any more, as the second set of flexi panels from itecworld have also failed after 6 months, very disappointed.
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Topcat
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Over the years I have never heard any good reports on flexi solar panels & that their efficiency is not
as good as the solid fixed panels.
Cheers,

Ted


Posted Image
www.havewheelswilltravel.iinet.net.au
"I believe that if life gives you lemons,you
should make lemonade & try to find somebody
whose life has given them vodka, & have a party"!!!!

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boobook
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From what I have read, each cell in a solar panel is series connected to the next by a wire which is extremely fragile.

Were the cells parallel connected it would be merely a drop in panel current output. Series connections means the whole panel drops out.

In a panel which is fused to a glass sheet the series connection fragility is of no consequence, everything is rigidly supported by the glass.

A flexible panel however does not have that integrity of cell connection, a break in one fragile wire is sufficient to destroy the panel.
A right bugger I am sure and an expensive one also.
Michael
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Nightjar
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Someone on here can confirm that fold up panels were dragged along behind vehicle until the Anderson plug pulled out. :wub:
Drive back to retrieve panels, that had end for ended along the track for about 30 metres before the plug let go. :'(
Screw driver simple fix and we were back on charge. :D







Good luck & safe travels
Peter


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"Aging seems to be the only available way to live a long life."
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boobook
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And another also on here not quite so lucky.

A bloody "willy willy", arse over with the panel and bang.

The glass is the same as the old toughened windscreens, shatters into a squillion tiny squares, cracks fill with dust, a sprinkle of moisture gets in and an order for a new panel happens shortly after.

All part and parcel, the folly of life
Michael
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