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Basic 100ah Campervan setup help - Is this correct?

Hello everyone,

I've spent a good while trying to learn what will be required for my setup and would really appreciate someone answering a few questions and taking a look over my proposed setup.

I will be using the 100ah Lifepo4 smart battery, this will be charged using the Orion-TR Smart DC-DC Charger via the Alternator. The Battery will power both DC and AC loads through the Sargent EC155 and the Victrons Phoenix Inverter; where im stuck is working out whats actually required in such a small system?

I have a decent understanding of 12v campervan electrics, however it seems it isn't quite so simple when using Lithium Lifepo3 batteries - I've attached a basic diagram of what the system will include on the Victron side (please ignore the direction of arrows).

The build will include basic 12v appliances such as a 12v fridge, water pump, LED lighting and a small inverter - most small appliances will be ran via the Sargent EC155. Heres where i'm struggling:

1- The van will include a 240v hookup which will run through the Sargent ec155 powering plug sockets and charging the leisure battery - Will this charger be sufficient for Lifepo4 batteries?

2- Do I need a Smart Battery Shunt if I'm using Victrons Smart Lifepo4 batteries?

3- What size fuse will I require for a 100ah Lifepo4 battery?

4- Am I right that the Mini BMS controls (on/off to protect over/under voltage) the charging side of the system and does the same on the load side via the Battery protect? I'm a little puzzled as to how this should be wired up to operate the inverter via the remote function; I've seen people using relays etc.

5- Can I run both the Waeco fridge and all other 12v appliances through one battery protect?

Thanks in advance,


charging batteryBattery Protectorion-tr smartLithium battery Smartcampervan
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