MultiPlus II 12/3000/2x120 - used for off grid boondocking, no solar (yet)

DIY
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1

Installed MP2, Cerbo GX w/Touch 50, SmartShunt 500A and (2) LiTime 200ah Lifepo4 batteries in my travel trailer. My camping is split 60/40 campground with full hook up and boondocking.

My questions:

When the camper is in my driveway I want to be able to take the batteries down to 70% and turn off any charging and run the camper on shore power only (100%). I realize that my 12v loads will still siphon from the batteries but I’ll monitor that. Is there a way to automate things using a scenario based setting?

Is there a logic driven way that says when battery reaches 49% charge to 70% and stop?

Also while in at it I’ll ask the loaded question….is there a run book of settings for my specific scenarios? And do I use VictronConnect or VictronConfigurator for the initial set up? And what should those settings be?

I’m new to all this and learning is a bit scattered.

Any help is most appreciated.

2

why not just set the desired SOC to 70% ?

3

Why would you want to do that?

4

Here is a bit more context:

Recently installed (2) LiTime 200ah lifepo4 batteries connected to a Victron based back-end:

- MultiPlus ii 12/3000/2x120v

- SmartShunt 500A

- Cerbo GX with Touch 50

- No solar (yet)

This is installed in my Jayco JayFlight travel trailer which I travel all over to campgrounds and boondocking.

12v loads are connected directly to the batteries (Blue Seas busbar) and the AC loads are running through the MP2 to my main panel (AC IN and AC OUT).

Shore power and inverter generator are coming in on the same line.

Shore power when home or at a campground where either 30A or 50A is provided.

Use of a generator connected when I am boondocking. Honda 3200i inverter (21.7V/32V peak) for those instances.

My ask?

I am looking for someone to assist with configuring and teaching me how to set up the initial configuration, based on my LiTime batteries. I did some of this myself but would like to have an expert review my settings.

and then help me create profiles for specific scenarios:

  • Home for a few weeks. 12v loads and AC loads remain on and constant, but batteries can stay at resting state pulling all power from shore power (50A) from home.

  • Days before a planned trip, bring the batteries up to full charge (balance cells, if needed) and what the proper timelines should look like?

  • At the campground with 30A or 50A shore power provided (both with and without the consideration of running my air conditioner)

  • At the campground where no power is provided and generator is needed (both with and without the consideration of running my air conditioner)

  • Removal or batteries during offseason and bringing them inside, I have a 20A charger to keep them from dropping too low, but what might I be missing?