Forum Discussion
FWC
Mar 24, 2021Explorer
BFL13 wrote:full_mosey wrote:BFL13 wrote:
With the BMS reading cell voltage and getting the SOC from that, how can it tell when the cell voltage is a lower loaded voltage and the SOC is actually higher? The AH counter doesn't get fooled by that.
The BMS is not a battery charger.
Do you have a battery charger that knows the SOC of your batteries?
HTH;
John
I was asking about how the Smart BMS can monitor SOC when it has loaded voltages to work with. I know know it is not a charger :)
The lithium BMS that report SOC use coulomb counting, just like the Victron BMV. Even the cheap BlueTooth BMS from China have built in coulomb. Seeing they are usually measuring current anyway, it is a few extra lines of code to calculate SOC.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,344 PostsLatest Activity: Dec 26, 2025