I have a problem that is driving me nuts. I have a “JBD 7S-20S 200A 21V 24V 48V 60V 72V Smart BMS Balance Board Protection With Bluetooth” installed on my 8 cell 200 ah LiFePo4 24 volt nominal battery pack. As anyone who has one of these BMS’s it has a relay to handle the higher current.
My problem is once it fully charged, VIA a GroWatt all in one solar charge controller, the relay starts kicking and clicking in and out. The all in one is not connected to the BMS via any communication cable. It is just providing power to and from the all in one. I’m sure I have some voltage setting wrong. I can’t figure out why it keeps doing it. Maybe I have the pack charge voltage set wrong on the GroWatt all in one? These are my current settings. .. Thanks -K
FileCode 3838
DesignCapacity 20000
CycleCapacity 18000
FullChargeVol 3450
ChargeEndVol 3000
DischargingRate 2
ManufactureDate 10896
SerialNumber 0
CycleCount 0
ChgOverTemp 3381
ChgOTRelease 3281
ChgLowTemp 2741
ChgUTRelease 2831
DisOverTemp 3481
DsgOTRelease 3381
DisLowTemp 2631
DsgUTRelease 2731
PackOverVoltage 2920
PackOVRelease 2760
PackUnderVoltage 2000
PackUVRelease 2400
CellOverVoltage 3650
CellOVRelease 3450
CellUnderVoltage 2500
CellUVRelease 3000
OverChargeCurrent 11000
OverDisCurrent 54536
BalanceStartVoltage 3400
BalanceWindow 15
SenseResistor 1
BatteryConfig 11
NtcConfig 7
PackNum 8
fet_ctrl_time_set 5
led_disp_time_set 30
VoltageCap80 3325
VoltageCap60 3270
VoltageCap40 3250
VoltageCap20 3200
HardCellOverVoltage 3900
HardCellUnderVoltage 2000
HardChgOverCurrent 158
HardDsgOverCurrent 85
HardTime 176
SCReleaseTime 5
ChgUTDelay 2
ChgOTDelay 2
DsgUTDelay 2
DsgOTDelay 2
PackUVDelay 2
PackOVDelay 2
CellUVDelay 2
CellOVDelay 2
ChgOCDelay 10
ChgOCRDelay 32
DsgOCDelay 10
DsgOCRDelay 32
ManufacturerName None
DeviceName JBD-7s-20s 200 amp docan
BarCode
My problem is once it fully charged, VIA a GroWatt all in one solar charge controller, the relay starts kicking and clicking in and out. The all in one is not connected to the BMS via any communication cable. It is just providing power to and from the all in one. I’m sure I have some voltage setting wrong. I can’t figure out why it keeps doing it. Maybe I have the pack charge voltage set wrong on the GroWatt all in one? These are my current settings. .. Thanks -K
FileCode 3838
DesignCapacity 20000
CycleCapacity 18000
FullChargeVol 3450
ChargeEndVol 3000
DischargingRate 2
ManufactureDate 10896
SerialNumber 0
CycleCount 0
ChgOverTemp 3381
ChgOTRelease 3281
ChgLowTemp 2741
ChgUTRelease 2831
DisOverTemp 3481
DsgOTRelease 3381
DisLowTemp 2631
DsgUTRelease 2731
PackOverVoltage 2920
PackOVRelease 2760
PackUnderVoltage 2000
PackUVRelease 2400
CellOverVoltage 3650
CellOVRelease 3450
CellUnderVoltage 2500
CellUVRelease 3000
OverChargeCurrent 11000
OverDisCurrent 54536
BalanceStartVoltage 3400
BalanceWindow 15
SenseResistor 1
BatteryConfig 11
NtcConfig 7
PackNum 8
fet_ctrl_time_set 5
led_disp_time_set 30
VoltageCap80 3325
VoltageCap60 3270
VoltageCap40 3250
VoltageCap20 3200
HardCellOverVoltage 3900
HardCellUnderVoltage 2000
HardChgOverCurrent 158
HardDsgOverCurrent 85
HardTime 176
SCReleaseTime 5
ChgUTDelay 2
ChgOTDelay 2
DsgUTDelay 2
DsgOTDelay 2
PackUVDelay 2
PackOVDelay 2
CellUVDelay 2
CellOVDelay 2
ChgOCDelay 10
ChgOCRDelay 32
DsgOCDelay 10
DsgOCRDelay 32
ManufacturerName None
DeviceName JBD-7s-20s 200 amp docan
BarCode