Solar Panels £130 for 205W - whats the catch?

Rigger Mortice said:
They are not designed for 12 volt systems. You can get around that but you need to be aware of it when choosing a regulator.
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Forgive my ignorance but don't the panels send about 30v and 10A, (or whatever their size dictates), to the MPPT controller, which then converts it to something the batteries can handle?

If that's not the case, what kind of regulator might I need?
 
Richard10002 said:
These look relatively very cheap. Is there a catch, perhaps old technology or something. I'm tempted to order a couple at that price.

http://www.ebay.co.uk/itm/281117557003?_trksid=p2055120.m1438.l2649&ssPageName=STRK:MEBIDX:IT

Cheers

Richard
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Looks about right to me.

I'm looking at solar PV for my new house. the trade price from am MCS registered installer (so I get the FIT) is about £3K for a 4KW system.

20 of those panels = 4Kw = £2600. allow £400 for all the mounting hardware, the inverter, isolators, cable, generation meter and you are easily up to £3K

So those panels are at about the current trade price for solar PV panels.
 
charles_reed said:
They're nominal 48v panels for domestic use, I suspect, - you'll need a PWM or MPPT controller for a 12v system and may have problems finding one - my BZ products is fine for the job.
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Here's one... http://www.bimblesolar.com/30amppt?gclid=CKn_rvqbzr0CFWsTwwodwjQA4A

You need to look at the max open circuit voltage... make sure it'll handle what the panel might throw out... this one's fine for most if not all...

But I would always have a charge controller in place... that way you're batteries will be properly charged with bulk/float etc. charging periods...
 
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