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Victron 150/45 vs 150/60?

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BartonB

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SmartSolar MPPT 150/45 130 x 186 x 70 1,3kg - $230~
SmartSolar MPPT 150/60-Tr 200 x 250 x 95 3kg - $375~

Why the big jump? in everything
More than twice the wight and such

Is it a different product under the same name? more advance in efficiency or something?

Gonna hook it up to two 550w panels 51v~ each, if I get the 60 so maybe add another panel in the future
 
More current always means heavier parts and cables -> more weight! If you want a robust and reliable build it must be more massive ;)
You also need beeter cooling, bigger heatsinks etc. etc.

If you think you really need more than 45 Amps go for the 60. How big and what voltage is your battery and how fast do you want it to charge?
If you have a higher voltage system you need less current for the same power ;)
 
rilonau said:
More current always means heavier parts and cables -> more weight! If you want a robust and reliable build it must be more massive ;)
You also need beeter cooling, bigger heatsinks etc. etc.

If you think you really need more than 45 Amps go for the 60. How big and what voltage is your battery and how fast do you want it to charge?
If you have a higher voltage system you need less current for the same power ;)
Click to expand...
Yes but it's only 15 amps, while 100/30 and 150/45 are the same size... :) a conspiracy? who knows

Anyway, at that price I can get 2 150/45 instead of one 150/60....unless I'll figure out a difference
 
You won't be able to series connect 3 x 51 Voc panels to either of those 150V max SCCs because that will exceed max voltage.

You could add another two panels down the road if you add the next 2 in parallel.

Either of those SCCs will work fine with 4 panels. Over-panelling is fine and just means you will reach max output of the SCC for a longer period of the day. In fact I prefer over-panelling now as it gives more consistent yield from one day to the next. Daily yield is less affected by variable weather conditions.
 
Kiwi2000 said:
You won't be able to series connect 3 x 51 Voc panels to either of those 150V max SCCs because that will exceed max voltage.

You could add another two panels down the road if you add the next 2 in parallel.

Either of those SCCs will work fine with 4 panels. Over-panelling is fine and just means you will reach max output of the SCC for a longer period of the day. In fact I prefer over-panelling now as it gives more consistent yield from one day to the next. Daily yield is less affected by variable weather conditions.
Click to expand...
What if I parallel 3? (24v battery)

Anyway, yes, In the long run I'll have 6 panels overall (that's how much space I got on the roof)
 
BartonB said:
What if I parallel 3? (24v battery)

Anyway, yes, In the long run I'll have 6 panels overall (that's how much space I got on the roof)
Click to expand...
Parallel your stay on the same volt of the panel.
Serial your volt go up and it go over the volt of the input.
(Winter your volt go up)

Best is really 2x times Serial and than to parallel.
This way you can have profit from both and you have more watts wat you can use.
You need 4 panels
 
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