Request for reviews: 690W, 400aH LiFePO4 12V, 2x30a MPPT, SBMS0

[Timba]

Hi all,

I am seeking extra opinions, ideas and mainly reviews GO's or NO GO's on my solar system built on my van. This is the second system I build on my second van. First time LiFePO4 and twice as big as the previous one.

Hans_Electrics

BMS123 Smart - Dual Relay 345 W Vmp 34.4V Voc 40.9 V 345 W Vmp 34.4V Voc 40.9 V 30A Epever Tracer 30A 4 x 400Ah Winston cells 12 V BMS123 Smart - Dual Relay + Victron Phoenix 12 | 1600 60A 150A EXTIO4- EXTIO4+ EXTIO3+ EXTIO3- ADC1n / ADC 1p PVp / PVn

docs.google.com

COMPONENTS

• PV: 2 x 345Wp Solar panels - datasheet
• MPPT 1: Epever Tracer AN 30A - datasheet
• MPPT 2: Epever Tracer-BN 30A - datasheet
• BMS: Electrodacus SBMS0 - datasheet
• Battery: GWL-Winston-LFP400AHA 12V - datasheet cells
• relays: 2 x BMS123 Smart - Dual Relay - datasheet
• Inverter: Victron Phoenix 12/1600

Points of special attention

• I am especially interested in whether this way of signaling BMS123 Smart - Dual Relay is correct.
• In the future, I would like to connect an extra charger to the system. Either an AC-charger, but more likely the alternator. Do I need extra components (such as a B2B charger) in between? I assume not because SBMS0 and BMS123 Smart - Dual Relay should take care of disconnecting?
• For streamlining the system I would have liked to have 1 BMS123 Smart - Dual Relay for the loads and 1 for the charging, but the floorplan of the electricity box made the displayed configuration more feasible.

I will be looking forward to tips and critiques.
Thanks in advance,

Tim

 

[svetz]

Hi Timba!

Welcome to the forums! I've moved this to the vehicle section in the hopes you'll get some more eyes looking at it that can hopefully respond to your questions.