I know victron isn't the cheapest around but from what i understand it's good quality.

But what model should i go for?

I will have 4 panels (<400w each)

Voc: ~50V

Vmp ~40V

Isc ~10A

Imp ~9,4A

Battery today will be a lifepo4 8S type (25,6V) and in next year when 8 more arrives it will be a 48V system at 280Ah

If i do my calculations right i will have 1 possible scenario for the 150/60 model and 2 different scenarios for the 250/60 model. i will round of voltages and amps just for easier overview

**150/60:**

2s2p:

Voc ~100V

Isc ~ 20A

**250/60:**

2s2p:

Voc ~100V

Isc ~ 20A

4s1p:

Voc ~200V

Isc ~10A

The price of the different victron models is not very big in difference. I will upgrade to more panels in the future (then 250/60 will be more benefitial) but for now, is the any upsides of running a 250 vs a 150? how will higher voltage behave on a cloudy day compared to lower voltage? I am trying to make a well judged call here on what mppt voltage range to choose.

I live in Sweden so in the winter we have very little sun and in the summer we have very long days (sun rises at 4am and sets at 11pm even).

So again, to not lose focus of the question:

**Higher voltage lower current or lower voltage and higher current?**