Questions on upgrade from AGM to LifePo4

DIY
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1

Hello to you all, and bear with me as a novice.

I have a 2017 Swift Toscane 794 RV, built on a Fiat Ducati chassie.

I don’t know the specs on the engine alternator but it’s a standard one from factory.

The RV have a 100Ah AGM start battery, and a 90 Ah AGM leisure battery, and everything electric is original from factory with a 120W solar panel (and here is the only upgrade so far, to a MPPT Victron SmartSolar 75 / 15 which gave a much noticeable positive effect)

Everything works extremely smoot with fully automatic charging of both batteries no matter what energy source is present, connected to mains, solar or engine running.

But now I’m aiming to upgrade to LiFePo4 and have already ordered a WattCycle Smart Mini 314Ah which will fit under the drivers seat where the one leisure battery is located.

I got an electric drawing from Sargent UK how/where to connect the new battery with a Victron DC-DC charger, to care about my alternator. But what Victron DC-DC charger to choose? And would I also get a Victron SmartShunt, and if so which one of them?

I will look over the primary electric wires to the battery and probably upgrade then with bigger ones, fuses and a safetybreaker located discrete but easy to reach if needed.

I also wonder what Victron charger to choose if I want one for be able to either mount in my RV for handle charging of my 314Ah LiFePo4 when connected to mains, or have as a portable extra opportunity for charging if occasionally needed. What size/model would suit my needs?

I’m not a hardcore off grid camper, so my plans is just to have a good dose of extra battery capacity when out off grid, but everything will be fully charged when leaving home, and I then have the solar panel, and even a portable electric generator as a “just in case”. So I’m not having much power craving equipment to feed more than a small microwave and a coffee machine planning. And planning to fit a good inverter tho be able to run those occasionally so what inverter to choose for say 2000 W?

Any recommendations…?

2

A Orion XS12/12-50 is the minimum. If the alternator is able to deliver more than 100A you can use two of them in parallel. Smartshunt 300A IP67.

3

Any of the Orion dc-dc chargers will work. Its just a matter of how fast you want to charge the batteries and what your budget is. If you can afford it the Orion XS 50 amp is the most efficient model they sell and is very small.

The SmartShunt 500/50 is great. You will not need the IP65 one.

As far as charging from shore power/mains this is again a question of how fast you want to charge and your budget. If you can afford it put in a multiplus. This would be the best choice if you are considering putting in an inverter anyway. Don’t put in a charger and separate inverter. Just do the Multiplus and it will cover both. If not go with one of the Bluesmart IP22 or Smart IP43 models.