Hey to all, I am new here and looking for help! I live on a boat for the past17 yrs., in that, I've gone through a few batteries (lead-acid).

[HRTKD]

Well that's why I'm here, to learn what I don't know.

There's so much info on this site that it can be a bit like trying to drink from a firehose. ?‍?

 

[Mex Rider]

Ok, so it's close to time in replacing my battery bank on the boat. I'm now looking at the lithium type. My system is 12 volt and having 660amp house. The boat is wired at 12 v and not willing to change. So, I'd like to get 8 200a cells or may-be go with 150a cells. for a total about 400 to 600ah. Does not seem to hard to buy the cells, but, the BMS or Balance units seem to be 24 to 72v. How can I wire in the BMS unit and to find this unit for 12v is the question. I could use some good help to how and what direction to get moving!
If someone wants to know about refrigeration or air conditioning...that is my field for the past 39yrs.

If you are a serious offshore sailor, nothing larger than 100 ah cells is advised. If you fall off a wave the shock to larger prismatic cells may internally damage them with expensive and potentially dangerous results. if you are a coastal fair weather sailor disregard.