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tothepoint avatar image
tothepoint asked

smartsolar 100/50 parallel

Question.

I now got 780w Solar on a 100/50 smart charger. This is connected to a 12v 600A lifepo4 battery.

As I spend winter time in Spain I want to upgrade the solar panels to shingled hyundai 415w each 3x.

That's to much for the 100/50 to handle so adding a second 100/50 could do the trick.

Is it possible to run parallel 2x smartsolar 100/50 and feed them with for example 1000w combined? Maybe networked over VE ?

Got this investment of the 100/50 and buying 100A controller could be the solution if I find a sponsor.


Greeting and tnx for any advice

JP

MPPT SmartSolar
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2 Answers
daver-1 avatar image
daver-1 answered ·

is your question "can i run two mppt's in parallel on the battery side", then please you do a little research i think you can easily find your answer.

by example:

if you do a search query in this community with the following terms

  • "multiple mppt" you could have found this
  • "multiple smartsolar" you could have found this


is your question "can i also run two MPPT's in parallel on the solar side" then the answer is no.

MPPT stands for maximum power point tracking. As far as i know the Victron MPPT's can not sync on the same string. For this reason both mppt's would begin fighting for the control of the maximum power point. Another reason is that if one MPPT fails and shuts down, you are pushing the maximum amps through the remaining charge controller which could cause failure in the other MPPT. If you have 2 MPPT's it is advised to run a independent PV strings per charge controller.

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djsmiley avatar image
djsmiley answered ·
You might consider a 100/30.

Run 2 panels in series on the existing 100/50 and the 3rd panel on a 100/30.

No need to get a second 100/50

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