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Old 27-08-12, 05:48 PM   #11
RobSmith
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Maximum power is stated at 31v.
I would want upto 62v for an equalising charge so that seems, on the face of it, good.
I wonder what voltage and current they will actually produce on a fairly gloomy day like today? and if I would need to have 3 in series to get up around 60v or more?
Do the cheap charge controllers require a higher voltage input than output or can they produce a higher voltage from a lower input? That might be the deciding factor.

I would also guess I would be looking at two parrallel setups to get the current up to a sensible level?

I would be interested in knowing what your recent findings are on that. I have been keeping an eye on the 6 wheeled draw bar trailer thread.

Rob

Last edited by RobSmith; 27-08-12 at 05:50 PM. Reason: Fat Fingers Typo... Had 56 wheeled draw bar trailer
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Old 27-08-12, 05:57 PM   #12
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I think with a mppt controller high input dc voltage is the name of the game.
Lower cable loses and more voltage for final charging.
I have just bought 22 panels( 190w) to add to the 6 I have.
Battery charging with an inverter to turn to AC power.
Cheers
Matthew
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Old 27-08-12, 06:00 PM   #13
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Haven't received the MPPT controller yet, was hoping to have it for the weekend, but nothing showed.

Peter
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Old 27-08-12, 06:11 PM   #14
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Quote:
Originally Posted by spencer1885 View Post
I think with a mppt controller high input dc voltage is the name of the game.
Lower cable loses and more voltage for final charging.
I have just bought 22 panels( 190w) to add to the 6 I have.
Battery charging with an inverter to turn to AC power.
Cheers
Matthew
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Old 27-08-12, 06:13 PM   #15
RobSmith
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Quote:
Originally Posted by spencer1885 View Post
I think with a mppt controller high input dc voltage is the name of the game.
Lower cable loses and more voltage for final charging.
I have just bought 22 panels( 190w) to add to the 6 I have.
Battery charging with an inverter to turn to AC power.
Cheers
Matthew


Did you get some sort of grant. Just wondering if the government could buy me some.

Rob
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Old 27-08-12, 06:21 PM   #16
spencer1885
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No grant,ebay about 60 to 70 pounds a panel.
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Old 27-08-12, 06:33 PM   #17
RobSmith
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Quote:
Originally Posted by spencer1885 View Post
No grant,ebay about 60 to 70 pounds a panel.
Did you get 22 the same or are they a mix? ... and are they happy working like that?
35p per watt sounds good on the surface of it.

Rob
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Old 27-08-12, 06:44 PM   #18
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Quote:
Originally Posted by RobSmith View Post
Did you get 22 the same or are they a mix? ... and are they happy working like that?
35p per watt sounds good on the surface of it.

Rob
No they are all the same make and spec.
The first 6 I paid a 100 per panel then I bought the other 22 from some one else for the 60 to 70 pounds, I can't be bothered to go and check the price it may be 65 per panel, but no more than 70 per panel.
The way things are going they will probably get cheaper but I want to get on.
The last 22 match the first 6.
I have just bought a Studer 4000 48 inverter/charge and I'm going to sort the batteries soon.
The Lister fr1 has clocked 70 hours on the newly fitted hour meter tonight.
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Old 27-08-12, 06:53 PM   #19
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I don't know if this link will work but try this.
http://www.navitron.org.uk/forum/ind...html#msg205757
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Old 04-09-12, 05:36 PM   #20
RobSmith
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Quote:
Originally Posted by spencer1885 View Post
No they are all the same make and spec.
The first 6 I paid a 100 per panel then I bought the other 22 from some one else for the 60 to 70 pounds, I can't be bothered to go and check the price it may be 65 per panel, but no more than 70 per panel.
The way things are going they will probably get cheaper but I want to get on.
The last 22 match the first 6.
I have just bought a Studer 4000 48 inverter/charge and I'm going to sort the batteries soon.
The Lister fr1 has clocked 70 hours on the newly fitted hour meter tonight.
Hi Matthew,
Do you have a contact for where you got them from?

Edit: and what power are you getting from your panels on a gloomy winter day compared with their max rated power?
Rob

Last edited by RobSmith; 04-09-12 at 05:41 PM.
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