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solar panel

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Post by Flash Fri Jun 23, 2023 10:14 am

I have a 2019 Nuevo which was supplied with an 80w solar panel. I have been wondering about having a second one fitted to double my charging capacity, I already use a 120w suitcase one but would like a panel on the van if feasible. I think theres room for it but don’t know if the Sargent system can cope & are their benefits of using a different controller. 
Wondering if anyone has gone down this route & what were your experiences.
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Post by Bilbobaggins Fri Jun 23, 2023 10:49 am

Try using the search function above, there is lots of information on the site.

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Post by IanH Fri Jun 23, 2023 12:29 pm

It is infinitely better to fit a dual battery solar controller, connect both batteries direct to its outputs via inline 10A fuses.
If you get a 20A controller you can add as much as you have roofspace.
Bypass/ avoid anything Sargent wherever possible imho!!
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Post by Flash Fri Jun 23, 2023 1:48 pm

Thanks IanH, but I’ve only got one battery, not enough room to fit 2.
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Post by Dbvwt Fri Jun 23, 2023 2:08 pm

Flash wrote:Thanks IanH, but I’ve only got one battery, not enough room to fit 2.

Ian means connect the dual controller to the leisure and vehicle batteries and never worry about a flat battery again up!
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Post by Caraman Fri Jun 23, 2023 5:50 pm

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If you lift out your EC700/EM40 unit this is the Sargent PWM solar controller/regulator you will see.  It is limited to 150W so if you want to increase your solar panels from 80W to 160W you will need a new controller.  Best to buy a decent MPPT one that charges the LB with a capped trickle charge going to the VB and bypass the EC700 altogether.  It's very easy to do.
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Post by FreelanderUK Fri Jun 23, 2023 6:17 pm

The Sargent regulator is only good for 10 amps ,if you add another 80watt panel on to the roof and join them you will need a 15 amp solar regulator as a minimum to be safe but best would be a 20amp regulator

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Post by Paulmold Fri Jun 23, 2023 6:18 pm

I was always led to believe the Sargent unit will only take 120w.

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Post by Caraman Fri Jun 23, 2023 6:22 pm

Paulmold wrote:I was always led to believe the Sargent unit will only take 120w.
You are probably right Paul but that might be due to the size of wiring or Sargent's smart solar charging wizardry.  As you can see from the photo the controller in theory is rated at 150W.  Whatever, a new and better controller should be fitted that bypasses the EC700.
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