Solar controller recommendations

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paperhouselad
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Solar controller recommendations

Post by paperhouselad »

Hi
   just purchased a solar panel, 160w from photonic-universe. Anyone point me in the right direction regarding a decent mppt controller to keep both batteries topped up? Thanks in advance.

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Mocki
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Re: Solar controller recommendations

Post by Mocki »

I have this one , true dual battery and blue tooth so you can adjust and monitor if need be 

https://www.ebay.co.uk/itm/292724265811
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Re: Solar controller recommendations

Post by Da dan »

Why not use their one? I’m very happy with my one from them. German made if I’m not wrong.


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Re: Solar controller recommendations

Post by Mocki »

Because, unless they have updated , they don’t do a true dual battery mppt ? I’m guessing 
 
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paperhouselad
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Re: Solar controller recommendations

Post by paperhouselad »

Cheers for the replies, da dan and mocki. The panel is 160 watt and they recommend a 20 amp controller, have been in touch with the supplier photonic universe but they recommend a pwm type, mocki  yours is rated at 15 amp would that still be ok? Thanks.

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Solar controller recommendations

Post by Da dan »

Mocki wrote:Because, unless they have updated , they don’t do a true dual battery mppt ? I’m guessing 
 

My one that I got from them a few years ago does both? Two separate outlets one main battery, (leisure battery) and one for the starter?
Unless I’m missing something? And I must say they were really helpful when I thought I had a problem with it.


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Re: Solar controller recommendations

Post by Oldiebut goodie »

Use a MPPT controller - it nearly doubled the output from my panel and the voltage output was far better . The one fitted by the conversion co. was a PWM and was absolute carp. The difference was amazing.
The second battery ( starter) output is 1A which was sufficient to keep my starter good over 2 months with factory alarm/immobiliser and a tracker. Before fitting the new controller the starter would be flat after 2 weeks.
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Re: Solar controller recommendations

Post by paperhouselad »

Cheers oldie, yes getting a mppt type, just which one?

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Re: Solar controller recommendations

Post by Mocki »

A 160w panel isn’t going to produce anywhere near 20amps .
you won’t be expecting above 13 in reality unless your battery is really flat ( which is unlikely) you won’t even see 10amps 

I have a 150w panel on mine with that controller . 

PWM controllers really are pants , even the expensive ones 

I had a Phototonic U PWM controller that I took out for this one , as OBG said, the difference is amazing , especially in low light , rain, ect 
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Re: Solar controller recommendations

Post by slowcoach »



Oldiebut goodie wrote:Use a MPPT controller - it nearly doubled the output from my panel and the voltage output was far better . The one fitted by the conversion co. was a PWM and was absolute carp. The difference was amazing.
The second battery ( starter) output is 1A which was sufficient to keep my starter good over 2 months with factory alarm/immobiliser and a tracker. Before fitting the new controller the starter would be flat after 2 weeks.

I think you've just persuaded me to finally swap my old pwm controller! Sounds like a cheap way to get more power from what I already have with very little effort.
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Oldiebut goodie
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Re: Solar controller recommendations

Post by Oldiebut goodie »

Before MPPT I can remember the PWM controllers being touted as being the best thing since sliced bread. :lol:
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Re: Solar controller recommendations

Post by slowcoach »

Yep, and I wonder what will be the next technology with a different acronym ;)
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paperhouselad
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Re: Solar controller recommendations

Post by paperhouselad »

Thanks all for the replies, got one the same as you have mocki.

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Re: Solar controller recommendations

Post by miltoncrew »

I've decided to install the same solar controller. I also recommend reading this article https://websolarguide.com/am-solar-tube/
Last edited by miltoncrew on 14 Jul 2020, 15:21, edited 2 times in total.

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Re: Solar controller recommendations

Post by ghost123uk »

Just a bit of a heads up re MPPT controllers from the likes of Ebay.

I cannot "name names" I am afraid, BUT, I am aware that there are Chinese suppliers that simply lie about the controllers they are selling and they claim they are MPPT, even labelling them as such, but in reality they are cheap PWM type ones. I would recommend dealing direct with a reputable UK supplier such as Photonic Universe ("other UK suppliers are available" as they say ;) )
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