Hi guys,
I know this subject is present in other threads but I still couldn't figured out how to wire my setup on my boat.
I bought 4 170W solar panels with Vmp 20.21V and 8.4A.
I need to be able to charge in my boat a 300Ah 12v LifePo4 battery and a 100AH 36v LifePo4.
I was thinking at a setup like this:
===Case1===
1. Wire 2 solar panels in series to a Victron mppt that can be set up to 36V and use those 2 for charging the 36v 100Ah battery.
2. Wire 2 solar panels in parallel to charge the 12 300Ah battery.
* In this case I think I can charge both my batteries in the same time.
-=====Case 2====
Use a switch that can commute to charge either the 12v or the 36v battery
1. Commute on position 1 and Charge the 12v battery with all 4 solar panels in parallel.
2. Commute on position 2 and charge the 36v battery with all 4 solar panels in series.
ofc, i will use two separately mppts for each case.
Question1: In the first place, do you think I can achive what I want?
Question2: What setup do you recommend?
Question3: In none of my ideas are good, what can you suggest to do to be able to have 2 batteries on my boat and be able to charge them?
Thank you
