Good afternoon everyone,
I’m currently running a solar setup configured as 4S (12V) using four 105Ah Wattcycle BT Mini batteries. The Bluetooth BMS app that comes with these batteries is a bit unreliable and doesn’t appear to support any external communication.
Because of this, I’m considering adding a Victron SmartShunt to gain reliable, remote access to State of Charge (SoC) data.
We recently ran into a situation where there was no sun for six days, and the batteries discharged all the way to 0% (11v). Afterward, getting the system to charge again was a hassle. I suspect it might have had something to do with the LiTime balancer trying to balance at 0%, which may have interfered with the BMS recovery or charge acceptance.
To prevent this kind of situation in the future, I’d like to use the SmartShunt in combination with the Cerbo GX to automatically trigger an external generator (or charging from an aux. buildings battery bank) when the batteries drop to around 10–20% SoC.
Is the Victron SmartShunt suitable and accurate for use in a 4S lithium battery setup like mine?
System specs for reference:
1× Renogy Rover 60A (soon to be replaced with a Victron SmartSolar MPPT 150/45 in July)
4× 105Ah Wattcycle BT Mini batteries
1× 48V LiTime balancer
1× Victron Cerbo GX MK2
1× Victron 48/800 120V Phoenix Inverter
1x Meanwell 500 W 18-70 VDC / 12 VDC converter