I have 4 battery packs 16s with 123smart bms. Connected to Cerbo over usb. 2 battery packs 16s with Seplos bms and connected to cerbo over bms can port. In VRM i see power from 123smart bms. Where is Tesla power ? Tesla is name only. This is 2 Seplos bms. In the screenshot discharging power is -8504 W. Where is Tesla1 power ? Grid value is correct
The System officially does not support multiple BMS
So, you can either choose to set Tesla or 123 Smart BMS as active or use some third party solutions like the “Battery Aggregator” to mimic a single BMS for all your batteries.
Theoretically you can also set the Battery Monitor to the Multiplus’ embedded DC-Measuring to determine the DC Power that should be displayed as Battery Power. (Works best with a dedicated VSense-Cable, tho)
this, however won’t give you SoC Information:
I change battery monitor
to Multiplus. Discharging sum by battery is 13903. Multiplus 13416. This is normal ?
I have 3pcs 48/5000 4x16 304ah + 2x16s 280ah. Works great. Seplos 3.0 bms is good. When these 280ah batteries are full, bms turn off battery charging and these 304ah will continue to charging
This is normal, as long as the multiplus is measuring the voltage on the same cables as you transfer the power.
Accuracy can be improved by connecting a VSense cable between the battery and the multiplus - or in your case the busbar and the multi, see the manual for that.
(But it will never hit the values reported by the bms)
I find what is this but i have 3 multis. Ehich multi to connect it to ?
Wire the voltage sense on the master of L1.
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