In Sweden we will soon have a new model for energy tariff which includes an element based on maximum consumption in any one hour. When my (newly installed) battery system charges during the night it charges at a rate higher than I even consume in the house. I'd like to set a maximum charge rate to avoid having to pay a higher tariff just because the system wants to charge the battery as quickly as possible. I haven't found any parameter for this, nor anybody asking about it, does anyone have any suggestions?
There is an option within the inverter settings to set the maximum charge current which will do as you want.
The charge current is in amps (A) and is the DC current going into the battery so you will need to know you battery volts to calculate the charge power.
You can see battery volts at the inverter screen in System, Battery or in the V2 app it is listed in Device, Battery, Info and choose Detailed Parameters.
If your battery volts are (say) 250V and you want to limit your charge power to 2kW the formula P(ower)=A(mps)*V(olts) will tell you what to set the maximum current to i.e. 2000=A*250 becomes 2000/250 = A i.e. in the example above it would be 8A
You will have to enter the settings on the inverter screen, go to Setting (enter passcode 0,0,0,0) then Battery, Max Chg Cur set this to the desired Amps (to default it to the 'maximum set it to 40A)
The charge current is in amps (A) and is the DC current going into the battery so you will need to know you battery volts to calculate the charge power.
You can see battery volts at the inverter screen in System, Battery or in the V2 app it is listed in Device, Battery, Info and choose Detailed Parameters.
If your battery volts are (say) 250V and you want to limit your charge power to 2kW the formula P(ower)=A(mps)*V(olts) will tell you what to set the maximum current to i.e. 2000=A*250 becomes 2000/250 = A i.e. in the example above it would be 8A
You will have to enter the settings on the inverter screen, go to Setting (enter passcode 0,0,0,0) then Battery, Max Chg Cur set this to the desired Amps (to default it to the 'maximum set it to 40A)
Thanks very much, that was exactly what I was looking for.
I'm using this method to reduce the power charge when needed from grd at night.
In the morning I increase the values again, so I didn't checked if this setting is valid also for the PV charging mode like a general current limit, or only for grid charging.
??
Best regards
In the morning I increase the values again, so I didn't checked if this setting is valid also for the PV charging mode like a general current limit, or only for grid charging.
??
Best regards
Dave Foster wrote: ↑Sat Nov 23, 2024 10:16 am There is an option within the inverter settings to set the maximum charge current which will do as you want.
The charge current is in amps (A) and is the DC current going into the battery so you will need to know you battery volts to calculate the charge power.
You can see battery volts at the inverter screen in System, Battery or in the V2 app it is listed in Device, Battery, Info and choose Detailed Parameters.
If your battery volts are (say) 250V and you want to limit your charge power to 2kW the formula P(ower)=A(mps)*V(olts) will tell you what to set the maximum current to i.e. 2000=A*250 becomes 2000/250 = A i.e. in the example above it would be 8A
You will have to enter the settings on the inverter screen, go to Setting (enter passcode 0,0,0,0) then Battery, Max Chg Cur set this to the desired Amps (to default it to the 'maximum set it to 40A)
It affects all battery charging so PV battery charge would be reduced as well, any excess PV would then go to exporttoze3 wrote: ↑Thu Nov 06, 2025 2:19 pm I'm using this method to reduce the power charge when needed from grd at night.
In the morning I increase the values again, so I didn't checked if this setting is valid also for the PV charging mode like a general current limit, or only for grid charging.
??
Best regards
Is there a way to limit this, or in alternative to tell the inverter that the maximum grid capacity is for instance 4.6KWh, so that way the inverter uses the power available to charge the battery taking in account the remaining loads?
Dave Foster wrote: ↑Thu Nov 06, 2025 2:57 pmIt affects all battery charging so PV battery charge would be reduced as well, any excess PV would then go to exporttoze3 wrote: ↑Thu Nov 06, 2025 2:19 pm I'm using this method to reduce the power charge when needed from grd at night.
In the morning I increase the values again, so I didn't checked if this setting is valid also for the PV charging mode like a general current limit, or only for grid charging.
??
Best regards
If you have home assistant you can throttle battery charge based on house load or similar - the gen 2 inverters (H1(G2), KH) running latest firmware also have an importlimitpwr setting which allows you to set your maximum import power which I think is what you are describing.
Also latest gen inverters with latest firmware using the app scheduler can set a charge power (using FDPwr) so if set to 3000 watts that’s the maximum charge power it can use.
Also latest gen inverters with latest firmware using the app scheduler can set a charge power (using FDPwr) so if set to 3000 watts that’s the maximum charge power it can use.