Hi,
i have a SOK48V100 battery connected to a Victron MultiplusII 48/3000 with the battery terminals, and connected to a Victron Cerbo via CAN. The MultiplusII has ESS active.
The battery is 16 cells of LiFePO4, per datasheet has a charging voltage of 57.6-58.4V.
The battery reports its max. charging voltage via CAN to the Cerbo as 56V.
However the Multiplus-II uses a MaxChargeVoltage of 52.4V.
The battery currently has 47% SoC with 52.34V (seen on MultiplusII) or 52.58V (seen on the Battery). A multimeter has about the same reading (within measurement tolerances).
The MultiplusII does not charge the battery. It has the red "low battery" LED flashing, the Cerbo shows a "low battery warning".
Note: Victron says "Low Battery" warning/alarm while it actually thinks it has a too HIGH battery voltage!
I tried to disable the battery alarms, the cerbo lets me do that. However the Multiplus does not care and still enforces it.
I tried to adjust the Charging voltage in the Cerbos DVCC menu. Again the Cerbo accepts the changes and the MultiplusII ignores them.
Both the Cerbo and the MultiplusII have latest software: MultiplusII: 500 / 2629500; Cerbo: 2.9.2 / 20221016213031 / 168448 .
Any idea where this comes from? It is nowhere configured! How can i change it?
Below the dbus info from the cerbo:
Battery:
Dc/0/Current 0
Dc/0/Power 0
Dc/0/Temperature 19.6
Dc/0/Voltage 52.58
DeviceInstance 512
FirmwareVersion -
Info/BatteryLowVoltage 44.8
Info/ChargeRequest 0
Info/FullChargeRequest 0
Info/MaxChargeCurrent 95
Info/MaxChargeVoltage 56
Info/MaxDischargeCurrent 95
InstalledCapacity 100
MultiplusII:
Alarms/LowBattery 1
BatteryOperationalLimits/BatteryLowVoltage 44.8
BatteryOperationalLimits/MaxChargeCurrent 50
BatteryOperationalLimits/MaxChargeVoltage 52.4
BatteryOperationalLimits/MaxDischargeCurrent 95
Dc/0/Current 0
Dc/0/MaxChargeCurrent 35
Dc/0/Power 10
Dc/0/Temperature -
Dc/0/Voltage 52.34
i have a SOK48V100 battery connected to a Victron MultiplusII 48/3000 with the battery terminals, and connected to a Victron Cerbo via CAN. The MultiplusII has ESS active.
The battery is 16 cells of LiFePO4, per datasheet has a charging voltage of 57.6-58.4V.
The battery reports its max. charging voltage via CAN to the Cerbo as 56V.
However the Multiplus-II uses a MaxChargeVoltage of 52.4V.
The battery currently has 47% SoC with 52.34V (seen on MultiplusII) or 52.58V (seen on the Battery). A multimeter has about the same reading (within measurement tolerances).
The MultiplusII does not charge the battery. It has the red "low battery" LED flashing, the Cerbo shows a "low battery warning".
Note: Victron says "Low Battery" warning/alarm while it actually thinks it has a too HIGH battery voltage!
I tried to disable the battery alarms, the cerbo lets me do that. However the Multiplus does not care and still enforces it.
I tried to adjust the Charging voltage in the Cerbos DVCC menu. Again the Cerbo accepts the changes and the MultiplusII ignores them.
Both the Cerbo and the MultiplusII have latest software: MultiplusII: 500 / 2629500; Cerbo: 2.9.2 / 20221016213031 / 168448 .
Any idea where this comes from? It is nowhere configured! How can i change it?
Below the dbus info from the cerbo:
Battery:
Dc/0/Current 0
Dc/0/Power 0
Dc/0/Temperature 19.6
Dc/0/Voltage 52.58
DeviceInstance 512
FirmwareVersion -
Info/BatteryLowVoltage 44.8
Info/ChargeRequest 0
Info/FullChargeRequest 0
Info/MaxChargeCurrent 95
Info/MaxChargeVoltage 56
Info/MaxDischargeCurrent 95
InstalledCapacity 100
MultiplusII:
Alarms/LowBattery 1
BatteryOperationalLimits/BatteryLowVoltage 44.8
BatteryOperationalLimits/MaxChargeCurrent 50
BatteryOperationalLimits/MaxChargeVoltage 52.4
BatteryOperationalLimits/MaxDischargeCurrent 95
Dc/0/Current 0
Dc/0/MaxChargeCurrent 35
Dc/0/Power 10
Dc/0/Temperature -
Dc/0/Voltage 52.34