Good day all,

Apologies if this has been asked and answered already. I have been searching for a couple of days now and not been able to find the answer yet.

I am in the process of upgrading and installing new batteries as well as a larger solar array on my boat.

I have bought 3* 220ah Victron deep cycle gel batteries.

My solar so far consists of two 365W panels with a Voc of 41.13V and Vmp of 33.96. the current ratings are 11.30 lsc to 10.75lmp per panel.

My plan is to connect these in series. I will be adding some more solar to these, probably 2 150W panels at a later stage.

According to the information I have been given and my calculations, the max carging current for the batteries will be 44A.

My question is this:

I have been advised to get the 150/85 MPPT controler for this as it can take up to 1200W for a 12V system. Is this really needed if I need to limit the charging current to 44A. Will a smaller MPPT better/worse for the charging of the batterie bank? or will it make no difference?

Kind thank you in advance.

Pieter Jordaan