We are looking for a little help with our Solar installation. We have a little piece of land in Spain, where we have four solar panels connected with a groundwater pump to water our trees. In the future we want to store that energy from the solar panels in batteries, so we invested in a charge controller, Multiplus and battery banks etc.
I made a scheme of our construction. It is all very new to us, and we are having doubts if we are doing the installation right. All tips are very welcome!
We think we bought the wrong MPPT controller. Our solar panels give 26A, which is too high for the model (MPPT100 20) we have now. We are thinking of buying an MPPT 150 45 or an MPPT 150 60, but we are not sure. Does anyone have a recommendation?
We have cables for the parallel connections of the batteries, and from the batteries to the Lynx, and from the Lynx to the Multiplus of 25MM2. We are now a bit doubt full if those cables aren’t too thin.
Other recommendation, tips that pops into your mind if you look at the scheme are also very welcome!
Very thankful!
Kind regards, Kees
Thanks for your response!
The DC solar pump is not connected to the batteries but directly connected to the solar panels. It has its own little controller and it works already. The solar panels give around 90V.
The mppt of 50A is indeed what is ideal. Unfortunately it’s not available for 48V batteries. I have to choose than for the 150 45, or the 150 60 model. Which one would you choose?
Thanks!
We are not planning to install 2 mppt’s.
I’m just not sure which model would be best. As we need one of 50A, which is not available for 48V batteries. Only 45A or 60A.
Ah, like that. Thanks!
Than we should disconnect the victron system when we use the pumps (which will not be often). And disconnect the pump when we use the victron system, to charge the batteries.
