I want to make a 12v battery system, charged from PV via MPPT (two Panels in series 400W each).
The idea is to use is in case of a blackout for home appliances like fridge, TV ....
The system is based on folowing components:
- Victron LYNX Dist.
- Enclosed DC 16A Switch - DC Disconnect (PV Disconnect from MPPT)
- Victron smart shunt
- Victron MPPT 150/70 charge conntroller
- Victron 100A smart BP.
- Victron ON/OFF Master Battery Switch (275A)
- DIY lifepo4 batteries with BMS (JBD or JK BMS)
- 2000W DC-AC(230V) Inverter with remote switch (non Victron)
Can I use the BP in that constellation ? Or should I avoid using the component ?
Generally, the BMS has the role of keeping the battery status under the eye (all 4 cells individually with balance option) so in case of any under voltage of any cell it will cut off the "-" wire which then leads to a system shutdown (load disconnect).
My question are:
- what happens with the MPPT controller if the battery gets disconnected and the Solar PV are still providing power to the component ?
- how to connect the BP in such a system - schematic would be great !?
- should I connect the Inverter directly to the battery via LYNX Dist (with fuse of course)?
I have read some posts on the internet which say that the BP should not be connected directly to the inverter (inline) because of an inrush current. Can someone please explain how should this be done properly !
If this is the case the BP is just useless in my case or am I missing here something ?