ABarbarian
New Member
- Joined
- Mar 13, 2022
- Messages
- 30
Panels:
- 455W MONO Genius GS-455WM/HC
- Open Circuit Voltage: 55.25 V
- Voltage at Pmax: 44.61 V
- 4 panels: s2p2
Inverter:
- MPP 4kW PIP-MS4048
- Max PV Input / Output: 3000 W
- Max Charging Current MPPT 60A
- Max PV Input Voc, MPPT Range: 145V, 60~115V
BMS:
- Jikong Smart BMS
Batteries:
- BYD LiFePO4 1P8S 24V 200Ah x2 wired serial to be 48V
- Voltage when fully charged: ~54V
I have the inverter setup to only charge batteries from solar as I feel the panels should supply enough power to both support my load and the batteries, but the batteries seems to charge very slowly, even on days when I have very little load (~100-200W) and full sunlight the battery voltage only rises by about 1V.
When charging I see about 2-7A being sent to the battery (at least I think that is the value, the dashboard and inverter display are not clear).
Can anyone see any errors in my configuration that would cause this slow charging?
BMS values when fully charged:
BMS configuration:
Inverter settings I think are important:
01 - Output Source Priority
Sbu: Solar first (then battery until setting 12)
02 - Maximum Charge Current
60A
05 - Battery Type
USE: User configured, see settings 26/27/29
11 - Maximum Utility Charging Current
30A
12 - Setting voltage point back to utility source
50V
13 - Setting voltage point back to battery
53V
16 - Charger Source Priority
OSO: Only Solar will charge batteries
26 - Bulk Charging Voltage (C.V voltage)
57V
27 - Floating Charging Voltage
54V
29 - Low DC cut-off voltage
41V
31 - Solar Power Balance
SbE: enable
All Inverter settings:
01 - Output Source Priority
Sbu: Solar first (then battery until setting 12)
02 - Maximum Charge Current
60A
03 - AC Input Voltage Range
UPS: 170-280VAC
04 - Power Saving Mode
SdS: inverter will not turn off when load low
05 - Battery Type
USE: User configured, see settings 26/27/29
06 - Auto Restart After Overload
Lfd: disabled
07 - Auto Restart After Temperature Cutoff
tfd: disabled
09 - Output Frequency
50: Thailand standard
11 - Maximum Utility Charging Current
30A
12 - Setting voltage point back to utility source
50V
13 - Setting voltage point back to battery
53V
16 - Charger Source Priority
OSO: Only Solar will charge batteries
18 - Alarm Control
bON: On
19 - Auto return to default display screen
ESP: return to default
20 - Backlight Control
LON: On
22 - Beeps when Primary Source Interupted
AON: On
23 - Overload Bypass
byd: disable bypass
25 - Record Fault code
FdS: disable
26 - Bulk Charging Voltage (C.V voltage)
57V
27 - Floating Charging Voltage
54V
29 - Low DC cut-off voltage
41V
31 - Solar Power Balance
SbE: enable
--- Parallel (inverter has parallel board but I do not use)
28 - AC Output Mode
SIG: Single
30 - PV Judge Condition
ONE
- 455W MONO Genius GS-455WM/HC
- Open Circuit Voltage: 55.25 V
- Voltage at Pmax: 44.61 V
- 4 panels: s2p2
Inverter:
- MPP 4kW PIP-MS4048
- Max PV Input / Output: 3000 W
- Max Charging Current MPPT 60A
- Max PV Input Voc, MPPT Range: 145V, 60~115V
BMS:
- Jikong Smart BMS
Batteries:
- BYD LiFePO4 1P8S 24V 200Ah x2 wired serial to be 48V
- Voltage when fully charged: ~54V
I have the inverter setup to only charge batteries from solar as I feel the panels should supply enough power to both support my load and the batteries, but the batteries seems to charge very slowly, even on days when I have very little load (~100-200W) and full sunlight the battery voltage only rises by about 1V.
When charging I see about 2-7A being sent to the battery (at least I think that is the value, the dashboard and inverter display are not clear).
Can anyone see any errors in my configuration that would cause this slow charging?
BMS values when fully charged:
BMS configuration:
Inverter settings I think are important:
01 - Output Source Priority
Sbu: Solar first (then battery until setting 12)
02 - Maximum Charge Current
60A
05 - Battery Type
USE: User configured, see settings 26/27/29
11 - Maximum Utility Charging Current
30A
12 - Setting voltage point back to utility source
50V
13 - Setting voltage point back to battery
53V
16 - Charger Source Priority
OSO: Only Solar will charge batteries
26 - Bulk Charging Voltage (C.V voltage)
57V
27 - Floating Charging Voltage
54V
29 - Low DC cut-off voltage
41V
31 - Solar Power Balance
SbE: enable
All Inverter settings:
01 - Output Source Priority
Sbu: Solar first (then battery until setting 12)
02 - Maximum Charge Current
60A
03 - AC Input Voltage Range
UPS: 170-280VAC
04 - Power Saving Mode
SdS: inverter will not turn off when load low
05 - Battery Type
USE: User configured, see settings 26/27/29
06 - Auto Restart After Overload
Lfd: disabled
07 - Auto Restart After Temperature Cutoff
tfd: disabled
09 - Output Frequency
50: Thailand standard
11 - Maximum Utility Charging Current
30A
12 - Setting voltage point back to utility source
50V
13 - Setting voltage point back to battery
53V
16 - Charger Source Priority
OSO: Only Solar will charge batteries
18 - Alarm Control
bON: On
19 - Auto return to default display screen
ESP: return to default
20 - Backlight Control
LON: On
22 - Beeps when Primary Source Interupted
AON: On
23 - Overload Bypass
byd: disable bypass
25 - Record Fault code
FdS: disable
26 - Bulk Charging Voltage (C.V voltage)
57V
27 - Floating Charging Voltage
54V
29 - Low DC cut-off voltage
41V
31 - Solar Power Balance
SbE: enable
--- Parallel (inverter has parallel board but I do not use)
28 - AC Output Mode
SIG: Single
30 - PV Judge Condition
ONE