I bought the Victron Energy SmartShunt IP65 to monitor my standalone 24v Lifepo4 trolling motor battery.
My question is, can I monitor the voltage on my 12v cranking battery also?
Currently, these batteries are completely isolated. (the 24v battery is only hooked up to my trolling motor)
I believe in order for this to work, I have to connect the negative battery terminals together.
Can this be done? Do I need to add a diode or something to the system?
Should be no problen connecting the grounds together, if its just to keep track of the voltage a thin wire will do the job.
Thanks! That was what I was thinking.