Hi,
If there's already a post of this please let me know where to find it.
1 x Sunpowergold 5000w all in one inverter
2 x Sunpowergold 5kw 48v lifepo battery
14 x Sunpowergold 200w pv panels
I have two sunpowergold 48v powerwall lifepo batteries connected in series to a sunpowergold 5000w all in one inverter.
My problem is this: I have set inverter parameters to cutoff charging at 95% capacity and cutoff discharge at 20%. The inverter takes a combined reading from both batteries connected via BMS communication to inverter. Example, battery 1 could read 50% on its BMS display and battery 2 could read 60%.....inverter reads combined capacity of battery bank as 55%. This begins to be a problem at the inverter charge/discharge cutoff points because one battery could be overcharged or underutilized at the inverter cutoff points.
I think the 1st battery in series is getting a stronger charge/discharge than the 2nd battery down the line.
To equalize battery charging/discharging so both batteries are closer in relative capacities after charging/discharging would a shunt block solve this problem?
Interver -----> breaker
Breaker -----> shunt block
Shunt block -----> battery 1
Shunt block -----> battery 2
Thanks in advance.
If there's already a post of this please let me know where to find it.
1 x Sunpowergold 5000w all in one inverter
2 x Sunpowergold 5kw 48v lifepo battery
14 x Sunpowergold 200w pv panels
I have two sunpowergold 48v powerwall lifepo batteries connected in series to a sunpowergold 5000w all in one inverter.
My problem is this: I have set inverter parameters to cutoff charging at 95% capacity and cutoff discharge at 20%. The inverter takes a combined reading from both batteries connected via BMS communication to inverter. Example, battery 1 could read 50% on its BMS display and battery 2 could read 60%.....inverter reads combined capacity of battery bank as 55%. This begins to be a problem at the inverter charge/discharge cutoff points because one battery could be overcharged or underutilized at the inverter cutoff points.
I think the 1st battery in series is getting a stronger charge/discharge than the 2nd battery down the line.
To equalize battery charging/discharging so both batteries are closer in relative capacities after charging/discharging would a shunt block solve this problem?
Interver -----> breaker
Breaker -----> shunt block
Shunt block -----> battery 1
Shunt block -----> battery 2
Thanks in advance.