MPPT input power monitoring in Node Red?

Node-RED
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1

I’d like to be able to turn on battery heaters only when the input solar voltage reaches a minimum level and stays there for a while. Due to the way the batteries are mounted, there are substantial periods of the day when the battery temperature is marginal for charging, but there is plenty of sun. I don’t want to leave the heaters running when there isn’t solar energy to charge them.

Setup is a Cerbo GX-S and MPPT 100/15. MPPT is connected to the Cerbo via VE.Direct. There’s also a SmartShunt connected to the same Cerbo.

I suspect there’s a way to do this in Node Red or maybe Signal K, but maybe someone has already done it?

Thanks!

2

I hope that is what you are asking for
In node red you can read MPPT operation mode, that is shows you if mppt operate in maximum tracking point, off or limited mode (meaning that Cerbo send command to decrease power).
Based on that you can understand if current production is at maximum for current solar position or limited. You can also get data for current production

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3

Thanks! I’ll take a look at that.