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Home battery · KSTAR · CEC approved July 2026

KSTAR BC143DE2

A 140.49 kWh home battery — very big home size, the 40+ kWh band.

Installed in Perth, after rebates: ~$119,498; Typical estimate — your own quote will vary
WA Battery Scheme rebate: Depends on your inverter; The scheme needs a Synergy-approved inverter — we don't know yours
Usable capacity: 140.49kWh; Very big home size — the 40+ kWh band

Datasheet (PDF)See the whole BluePulse series

What we can tell you

Read from the figures on this page — no review written yet

140.49 kWh sits in the very big home band (40+ kWh).
It is CEC-approved, which is a condition of both the federal STC discount and the WA Battery Scheme.
We can't score it: a value score needs a price and full specs, and without them any number would be guesswork.

Key specs, in plain terms

The numbers that matter for a home. The full datasheet is below.

Usable capacity How much energy it stores for you to use: 140.49kWh
Continuous power How much it can run at once — enough for a whole home, air conditioning included: 50kW
Round-trip efficiency How much of the energy you store comes back out: 98%
Depth of discharge How much of the battery you can actually use: 90%
Warranty 80% of capacity guaranteed at the end of it: 5yr
Battery chemistry Lithium iron phosphate — the long-cycle-life type: LFP

Full datasheet

Every figure on file for the KSTAR BluePulse, by section.

Full datasheet, by section
Specification	Value
Cell & chemistry
Chemistry	LFP
Capacity & power
Continuous power	50 kW
Round-trip efficiency	97.5%
Lifespan & degradation
Capacity retained at year 10	80%
Warranted throughput	2.62 MWh
Physical
Dimensions (H×W×D)	2380 × 1100 × 1100 mm
Weight	75 kg
IP rating	IP54
Installation requirements
Top clearance	500 mm
Side clearance	600 mm
Front clearance	600 mm
AC breaker	32 A
Cable gauge	10 mm²
DNSP pre-approval	No
Estimated install time	8 hrs

Parsed from the manufacturer datasheet, install manual, and warranty document. Confirm against the linked PDFs before relying on a value for a quote or installation.

Documents

Warranty and support

Warranty terms and Australian support structure.

The warranty covers defects in materials and workmanship for 5 years. Excludes damage from improper use or bad installation. Claims can be made by contacting KSTAR with the required information.

Duration

years

Throughput

2.62

MWh

Max Temp

45°

celsius

Max Backup

Level 0

No Backup

Australian support structure

Not verified

We have not verified this brand's Australian support structure. Confirm warranty arrangements with the manufacturer or your installer.

Perth climate suitability

Suitable with precautions

Rated to 45°C. Plan for a shaded or garage install through Perth summers.

Key warranty terms

•Depth of Discharge: 90% usable capacity
•Round-trip Efficiency: 98% rated
•Annual Degradation: ~2.5% per year expected
•Installation: Must be installed by SAA-accredited installer
•Operating Conditions: -10°C to 45°C

✓ TransferableFull replacement≥80% capacity at year 10

Warranty Document Datasheet Compare Warranties

WA Battery Scheme eligibility

Conditional

Synergy SSL inverter pairing, VPP participation and state-rebate qualification for this battery. Rebate and STC amounts are shown in the pricing panel.

AC-coupled system: needs a gateway device on the Synergy SSL (e.g. SMA, Redback), or a same-brand inverter + battery pair (Sungrow or Fronius) for shared compliance. Without one, export is limited to 1.5kW and VPP/DEBS/rebate/loan are unavailable — and third-party gateways can struggle to meet compliance testing. Any later addition to an AC-coupled system triggers whole-of-site compliance, so for many homes replacing toward a hybrid (DC-coupled) inverter is the sounder path. AC vs DC coupling

CSIP-AUS compliant
Inverter must be CSIP-AUS compliant under the current WA framework.
Synergy SSL approved inverter
Needs pairing with a Synergy SSL approved inverter.
VPP activation ready
VPP activation requires a Synergy SSL approved inverter.
WA Battery Scheme rebate
Requires Battery Rewards participation under the current WA framework.
Synergy Battery Rewards
Requires a CSIP-AUS compliant system and reliable internet.
Interest-free loan
Not eligible for interest-free financing.

Under current WA rules, new rebate applications require VPP enrolment and CSIP-AUS compliance. How the scheme works · Estimate VPP earnings

About KSTAR

View Full Profile →

Years in AU Market4+ years

Local SupportNot verified

CEC-Listed Products38 models

4yr AU

CEC-approved products since 2022

4 years in the Australian market

Fault & error codes — KSTAR BluePulse

Extracted from the installation manual

47 documented

Showing 47 of 47. The official install manual is the authoritative source — always confirm before acting.

F01criticalCall your installer
Manual (PDF)
INV Volt Short
Likely cause
Voltage short circuit detected in inverter.
What to do
Disconnect from power and check for faults.
F02criticalCall your installer
Manual (PDF)
GFCI Sensor Fault
Likely cause
Faulty GFCI sensor detected.
What to do
Inspect GFCI connections and replace if necessary.
F06criticalCall your installer
Manual (PDF)
Bus Short Circuit
Likely cause
Short circuit detected on bus connections.
What to do
Immediately disconnect power and inspect for shorts.
F07criticalCall your installer
Manual (PDF)
PV ISO Under Fault
Likely cause
Insulation fault detected in PV system.
What to do
Inspect PV connections and rectify insulation faults.
F08criticalCall your installer
Manual (PDF)
PV Input Short Circuit
Likely cause
Short circuit on PV input detected.
What to do
Disconnect and determine cause of short.
F10criticalCall your installer
Manual (PDF)
INV Curr Over
Likely cause
Inverter current exceeds rated limits.
What to do
Reduce load and inspect inverter for issues.
F11criticalCall your installer
Manual (PDF)
INV DC Over
Likely cause
DC voltage is exceeding inverter limits.
What to do
Check incoming DC connections and rectify.
F14criticalCall your installer
Manual (PDF)
Grid Relay Fault
Likely cause
Fault in the relay connecting to the grid.
What to do
Check for relay issues and replace if needed.
F15criticalCall your installer
Manual (PDF)
DisChg Curr Over
Likely cause
Discharge current is too high.
What to do
Reduce load and inspect battery connections.
F16criticalCall your installer
Manual (PDF)
Chg Curr Over
Likely cause
Charge current exceeds specifications.
What to do
Monitor charging setup and adjust if necessary.
F19criticalCall your installer
Manual (PDF)
EPS Relay Fault
Likely cause
Issue with Emergency Power Supply relay.
What to do
Inspect EPS relay and functionality.
F20criticalCall your installer
Manual (PDF)
Alway Over Load
Likely cause
Inverter has been overloaded continuously.
What to do
Audit loads to check compliance and reduce as needed.
W05criticalCall your installer
Manual (PDF)
Bat Loss
Likely cause
Battery is not connected or is faulty.
What to do
Check battery connections and functionality.
W09criticalCall your installer
Manual (PDF)
Over Load
Likely cause
Inverter is overloaded beyond capacity limits.
What to do
Reduce load and restart the inverter after a short wait.
W10criticalCall your installer
Manual (PDF)
GFCI Over
Likely cause
Ground Fault Circuit Interrupter has detected an overcurrent.
What to do
Check for potential wiring issues and restore connections.
W11criticalCall your installer
Manual (PDF)
LN Reverse
Likely cause
Line and Neutral are reversed in installation.
What to do
Turn off the inverter and check installation.
W17criticalCall your installer
Manual (PDF)
BMS Over Temp
Likely cause
Battery Management System detected overheating.
What to do
Allow cooling and check for ventilation issues.
W21criticalCall your installer
Manual (PDF)
BMS Under Volt
Likely cause
Battery voltage is critically low for operation.
What to do
Recharge battery immediately to prevent damage.
W23criticalCall your installer
Manual (PDF)
BMS Severe Over Volt
Likely cause
Voltage far exceeds safe limits within the battery.
What to do
Disconnect immediately and assess battery health.
W24criticalCall your installer
Manual (PDF)
BMS Severe Over Temp
Likely cause
Battery has reached a dangerously high temperature.
What to do
Cut power and allow to cool down before inspecting.
F00warning
Manual (PDF)
Soft Time Out
Likely cause
Device requires a reset after timeout.
What to do
Restart the inverter after appropriate checks.
F04warningCall your installer
Manual (PDF)
Bus Volt Low
Likely cause
Bus voltage is below normal operating range.
What to do
Check input voltage and restart if necessary.
F05warningCall your installer
Manual (PDF)
Bus Volt High
Likely cause
Bus voltage exceeds normal operating range.
What to do
Check supplies and allow system to stabilize.
F09warningCall your installer
Manual (PDF)
Bypass Relay Fault
Likely cause
Issue with bypass relay operation.
What to do
Check bypass relay functionality.
F12warningCall your installer
Manual (PDF)
Ambient Over Temp
Likely cause
Ambient temperature exceeds operational limits.
What to do
Ensure ventilation and cooling are adequate.
F13warningCall your installer
Manual (PDF)
Sink Over Temp
Likely cause
Temperature at sink exceeds limits.
What to do
Allow cooling, inspect ventilation.
F17warningCall your installer
Manual (PDF)
Current Sensor Fault
Likely cause
Fault in current sensing functionality.
What to do
Inspect current sensing connections and rectify.
F18warningCall your installer
Manual (PDF)
INV Abnormal
Likely cause
Inverter operation outside normal ranges.
What to do
Monitor inverter and report issues to installer.
F32warningCall your installer
Manual (PDF)
SCI Fault
Likely cause
Fault in System Control Interface.
What to do
Check interface connections and reset system.
W00warningCall your installer
Manual (PDF)
Grid Volt Low
Likely cause
Grid voltage is below acceptable limits.
What to do
Check grid connection and ensure voltage is within the acceptable range.
W01warningCall your installer
Manual (PDF)
Grid Volt High
Likely cause
Grid voltage is above acceptable limits.
What to do
Check grid connection and ensure voltage is within the acceptable range.
W02warningCall your installer
Manual (PDF)
Grid Frequency Low
Likely cause
Grid frequency is below acceptable limits.
What to do
Monitor grid frequency and check with local power company if issues persist.
W03warningCall your installer
Manual (PDF)
Grid Frequency High
Likely cause
Grid frequency is above acceptable limits.
What to do
Monitor grid frequency and check with local power company if issues persist.
W04warningCall your installer
Manual (PDF)
Solar Loss
Likely cause
The solar array is not producing enough power.
What to do
Check solar array connections and ensure solar panels are operational.
W06warningCall your installer
Manual (PDF)
Bat Under Volt
Likely cause
Battery voltage is below acceptable limits.
What to do
Charge the battery and ensure connections are secure.
W07warningCall your installer
Manual (PDF)
Bat Volt Low
Likely cause
Battery voltage is low.
What to do
Check battery health and connections, recharge if needed.
W08warningCall your installer
Manual (PDF)
Bat Volt High
Likely cause
Battery voltage is above acceptable limits.
What to do
Check battery health and if above settings, contact installer.
W12warningCall your installer
Manual (PDF)
Fan Fault
Likely cause
Cooling fan is not functioning properly.
What to do
Inspect the fan and ensure it is operational.
W13warningCall your installer
Manual (PDF)
BAT Power Down
Likely cause
Battery is powered down or disconnected.
What to do
Check battery connections and ensure they are secure.
W14warningCall your installer
Manual (PDF)
BMS Discharge Over Current
Likely cause
Battery Management System detected over current during discharge.
What to do
Reduce load or disconnect temporarily to allow BMS to reset.
W15warningCall your installer
Manual (PDF)
BMS Charge Over Current
Likely cause
Battery Management System detected over current during charging.
What to do
Check the charging setup and reduce input current as needed.
W16warningCall your installer
Manual (PDF)
BMS Over Volt
Likely cause
Battery voltage exceeds safe operational limits set in BMS.
What to do
Disconnect and monitor the battery for abnormalities.
W18warningCall your installer
Manual (PDF)
BMS Discharge Low Temp
Likely cause
Temperature is too low for battery operation.
What to do
Move to a warmer environment if possible.
W19warningCall your installer
Manual (PDF)
Bms Volt Imbalance
Likely cause
Voltage across battery cells is not balanced.
What to do
Monitor battery performance and check for defects.
W20warningCall your installer
Manual (PDF)
Bms Communicate Fault
Likely cause
Communication error within Battery Management System.
What to do
Restart the system and check connections.
W22warningCall your installer
Manual (PDF)
Bms Chg Temp Low
Likely cause
Battery temperature is too low for charging.
What to do
Warm the battery environment if possible.
W25warningCall your installer
Manual (PDF)
CT Reverse
Likely cause
Current Transformer connections are reversed.
What to do
Check and correct CT connections.

What it costs in Perth

$126,441

Typical installed price, before rebates

WA Battery Scheme: Depends on your inverter
Federal STCs: −$6,943
You’d pay about: $119,498

The WA Battery Scheme (up to $1,300) needs a Synergy-approved inverter and VPP enrolment. We don't know which inverter you'd pair this with, so it isn't deducted above — ask your installer. STCs assume about $39.9 a certificate. Estimates only; your quote will vary.

Explore your options

Which size band is your home?

Usable capacity, for one battery system

Smaller home: 10–15 kWh
Medium home: 20–30 kWh
Big home: 30–40 kWh
Very big home: 40+ kWh

This battery is one unit in the very big home band. The WA rebate caps at 10 kWh, but that is a rebate limit, not a sizing guide.

The federal rebate shrinks each year

STC value for this 140.49 kWh battery

How it compares

The KSTAR BC143DE2 against the closest-sized batteries from other brands.

Specification	KSTAR BC143DE2KSTAR	Sigenergy SigenStack M2-0.5C-BST-12/144.69 kWhSigenergy	Sigenergy SigenStack M2-1C-BST-12/144.69 kWhSigenergy

Usable capacity?	140.49 kWhbest value	140.4 kWh	140.4 kWh
Continuous power?	50 kW	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	98%best value	92%	92%
Warranty	5 years	10 yearsbest value	10 yearsbest value
Chemistry	LFP	LFP	LFP

Specs from the CEC register and datasheet enrichment. Indicative — confirm exact figures with your installer.

More from KSTAR

Other CEC-approved products from KSTAR available in Australia.

KSTAR Inverters

BluE-S 3680D (AS4777-2 2020)

3.68 kW · 1φ

BluE-S 3680D-M1 (AS4777-2 2020)

3.68 kW · 1φ

BluE-S 5000D (AS4777-2 2020)

5 kW · 1φ

BluE-S 5000D-M1 (AS4777-2 2020)

5 kW · 1φ

E10KT-D22 (AS4777-2 2020)

10 kW · 3φ

E12KT-D22 (AS4777-2 2020)

12 kW · 3φ

View all KSTAR inverters

View full KSTAR manufacturer profile

Want to take the next step?

Compare quotes from SAA-accredited local installers — you choose which to act on. No obligation.

This model is one entry in the desk's index of solar batteries for Perth — every CEC-approved battery on one comparable dataset.

Product Information Disclaimer:

Product specifications, pricing, and availability are subject to change without notice. We make no warranties regarding product performance, longevity, or suitability for your specific needs.

Always verify specifications with the manufacturer and installer before purchase. Warranty terms are set by manufacturers and may have conditions not disclosed here. Battery performance degrades over time.

Home battery · KSTAR · CEC approved July 2026

KSTAR BC143DE2

A 140.49 kWh home battery — very big home size, the 40+ kWh band.

Installed in Perth, after rebates: ~$119,498; Typical estimate — your own quote will vary
WA Battery Scheme rebate: Depends on your inverter; The scheme needs a Synergy-approved inverter — we don't know yours
Usable capacity: 140.49kWh; Very big home size — the 40+ kWh band

Datasheet (PDF)See the whole BluePulse series

Spotted something outdated?

What we can tell you

Read from the figures on this page — no review written yet

140.49 kWh sits in the very big home band (40+ kWh).
It is CEC-approved, which is a condition of both the federal STC discount and the WA Battery Scheme.
We can't score it: a value score needs a price and full specs, and without them any number would be guesswork.

Key specs, in plain terms

The numbers that matter for a home. The full datasheet is below.

Usable capacity How much energy it stores for you to use: 140.49kWh
Continuous power How much it can run at once — enough for a whole home, air conditioning included: 50kW
Round-trip efficiency How much of the energy you store comes back out: 98%
Depth of discharge How much of the battery you can actually use: 90%
Warranty 80% of capacity guaranteed at the end of it: 5yr
Battery chemistry Lithium iron phosphate — the long-cycle-life type: LFP

Full datasheet

Every figure on file for the KSTAR BluePulse, by section.

Full datasheet, by section
Specification	Value
Cell & chemistry
Chemistry	LFP
Capacity & power
Continuous power	50 kW
Round-trip efficiency	97.5%
Lifespan & degradation
Capacity retained at year 10	80%
Warranted throughput	2.62 MWh
Physical
Dimensions (H×W×D)	2380 × 1100 × 1100 mm
Weight	75 kg
IP rating	IP54
Installation requirements
Top clearance	500 mm
Side clearance	600 mm
Front clearance	600 mm
AC breaker	32 A
Cable gauge	10 mm²
DNSP pre-approval	No
Estimated install time	8 hrs

Parsed from the manufacturer datasheet, install manual, and warranty document. Confirm against the linked PDFs before relying on a value for a quote or installation.

Documents

Warranty and support

Warranty terms and Australian support structure.

The warranty covers defects in materials and workmanship for 5 years. Excludes damage from improper use or bad installation. Claims can be made by contacting KSTAR with the required information.

Duration

years

Throughput

2.62

MWh

Max Temp

45°

celsius

Max Backup

Level 0

No Backup

Australian support structure

Not verified

We have not verified this brand's Australian support structure. Confirm warranty arrangements with the manufacturer or your installer.

Perth climate suitability

Suitable with precautions

Rated to 45°C. Plan for a shaded or garage install through Perth summers.

Key warranty terms

•Depth of Discharge: 90% usable capacity
•Round-trip Efficiency: 98% rated
•Annual Degradation: ~2.5% per year expected
•Installation: Must be installed by SAA-accredited installer
•Operating Conditions: -10°C to 45°C

✓ TransferableFull replacement≥80% capacity at year 10

Warranty Document Datasheet Compare Warranties

WA Battery Scheme eligibility

Conditional

Synergy SSL inverter pairing, VPP participation and state-rebate qualification for this battery. Rebate and STC amounts are shown in the pricing panel.

CSIP-AUS compliant
Inverter must be CSIP-AUS compliant under the current WA framework.
Synergy SSL approved inverter
Needs pairing with a Synergy SSL approved inverter.
VPP activation ready
VPP activation requires a Synergy SSL approved inverter.
WA Battery Scheme rebate
Requires Battery Rewards participation under the current WA framework.
Synergy Battery Rewards
Requires a CSIP-AUS compliant system and reliable internet.
Interest-free loan
Not eligible for interest-free financing.

Under current WA rules, new rebate applications require VPP enrolment and CSIP-AUS compliance. How the scheme works · Estimate VPP earnings

About KSTAR

View Full Profile →

Years in AU Market4+ years

Local SupportNot verified

CEC-Listed Products38 models

4yr AU

CEC-approved products since 2022

4 years in the Australian market

Fault & error codes — KSTAR BluePulse

Extracted from the installation manual

47 documented

Showing 47 of 47. The official install manual is the authoritative source — always confirm before acting.

F01criticalCall your installer
Manual (PDF)
INV Volt Short
Likely cause
Voltage short circuit detected in inverter.
What to do
Disconnect from power and check for faults.
F02criticalCall your installer
Manual (PDF)
GFCI Sensor Fault
Likely cause
Faulty GFCI sensor detected.
What to do
Inspect GFCI connections and replace if necessary.
F06criticalCall your installer
Manual (PDF)
Bus Short Circuit
Likely cause
Short circuit detected on bus connections.
What to do
Immediately disconnect power and inspect for shorts.
F07criticalCall your installer
Manual (PDF)
PV ISO Under Fault
Likely cause
Insulation fault detected in PV system.
What to do
Inspect PV connections and rectify insulation faults.
F08criticalCall your installer
Manual (PDF)
PV Input Short Circuit
Likely cause
Short circuit on PV input detected.
What to do
Disconnect and determine cause of short.
F10criticalCall your installer
Manual (PDF)
INV Curr Over
Likely cause
Inverter current exceeds rated limits.
What to do
Reduce load and inspect inverter for issues.
F11criticalCall your installer
Manual (PDF)
INV DC Over
Likely cause
DC voltage is exceeding inverter limits.
What to do
Check incoming DC connections and rectify.
F14criticalCall your installer
Manual (PDF)
Grid Relay Fault
Likely cause
Fault in the relay connecting to the grid.
What to do
Check for relay issues and replace if needed.
F15criticalCall your installer
Manual (PDF)
DisChg Curr Over
Likely cause
Discharge current is too high.
What to do
Reduce load and inspect battery connections.
F16criticalCall your installer
Manual (PDF)
Chg Curr Over
Likely cause
Charge current exceeds specifications.
What to do
Monitor charging setup and adjust if necessary.
F19criticalCall your installer
Manual (PDF)
EPS Relay Fault
Likely cause
Issue with Emergency Power Supply relay.
What to do
Inspect EPS relay and functionality.
F20criticalCall your installer
Manual (PDF)
Alway Over Load
Likely cause
Inverter has been overloaded continuously.
What to do
Audit loads to check compliance and reduce as needed.
W05criticalCall your installer
Manual (PDF)
Bat Loss
Likely cause
Battery is not connected or is faulty.
What to do
Check battery connections and functionality.
W09criticalCall your installer
Manual (PDF)
Over Load
Likely cause
Inverter is overloaded beyond capacity limits.
What to do
Reduce load and restart the inverter after a short wait.
W10criticalCall your installer
Manual (PDF)
GFCI Over
Likely cause
Ground Fault Circuit Interrupter has detected an overcurrent.
What to do
Check for potential wiring issues and restore connections.
W11criticalCall your installer
Manual (PDF)
LN Reverse
Likely cause
Line and Neutral are reversed in installation.
What to do
Turn off the inverter and check installation.
W17criticalCall your installer
Manual (PDF)
BMS Over Temp
Likely cause
Battery Management System detected overheating.
What to do
Allow cooling and check for ventilation issues.
W21criticalCall your installer
Manual (PDF)
BMS Under Volt
Likely cause
Battery voltage is critically low for operation.
What to do
Recharge battery immediately to prevent damage.
W23criticalCall your installer
Manual (PDF)
BMS Severe Over Volt
Likely cause
Voltage far exceeds safe limits within the battery.
What to do
Disconnect immediately and assess battery health.
W24criticalCall your installer
Manual (PDF)
BMS Severe Over Temp
Likely cause
Battery has reached a dangerously high temperature.
What to do
Cut power and allow to cool down before inspecting.
F00warning
Manual (PDF)
Soft Time Out
Likely cause
Device requires a reset after timeout.
What to do
Restart the inverter after appropriate checks.
F04warningCall your installer
Manual (PDF)
Bus Volt Low
Likely cause
Bus voltage is below normal operating range.
What to do
Check input voltage and restart if necessary.
F05warningCall your installer
Manual (PDF)
Bus Volt High
Likely cause
Bus voltage exceeds normal operating range.
What to do
Check supplies and allow system to stabilize.
F09warningCall your installer
Manual (PDF)
Bypass Relay Fault
Likely cause
Issue with bypass relay operation.
What to do
Check bypass relay functionality.
F12warningCall your installer
Manual (PDF)
Ambient Over Temp
Likely cause
Ambient temperature exceeds operational limits.
What to do
Ensure ventilation and cooling are adequate.
F13warningCall your installer
Manual (PDF)
Sink Over Temp
Likely cause
Temperature at sink exceeds limits.
What to do
Allow cooling, inspect ventilation.
F17warningCall your installer
Manual (PDF)
Current Sensor Fault
Likely cause
Fault in current sensing functionality.
What to do
Inspect current sensing connections and rectify.
F18warningCall your installer
Manual (PDF)
INV Abnormal
Likely cause
Inverter operation outside normal ranges.
What to do
Monitor inverter and report issues to installer.
F32warningCall your installer
Manual (PDF)
SCI Fault
Likely cause
Fault in System Control Interface.
What to do
Check interface connections and reset system.
W00warningCall your installer
Manual (PDF)
Grid Volt Low
Likely cause
Grid voltage is below acceptable limits.
What to do
Check grid connection and ensure voltage is within the acceptable range.
W01warningCall your installer
Manual (PDF)
Grid Volt High
Likely cause
Grid voltage is above acceptable limits.
What to do
Check grid connection and ensure voltage is within the acceptable range.
W02warningCall your installer
Manual (PDF)
Grid Frequency Low
Likely cause
Grid frequency is below acceptable limits.
What to do
Monitor grid frequency and check with local power company if issues persist.
W03warningCall your installer
Manual (PDF)
Grid Frequency High
Likely cause
Grid frequency is above acceptable limits.
What to do
Monitor grid frequency and check with local power company if issues persist.
W04warningCall your installer
Manual (PDF)
Solar Loss
Likely cause
The solar array is not producing enough power.
What to do
Check solar array connections and ensure solar panels are operational.
W06warningCall your installer
Manual (PDF)
Bat Under Volt
Likely cause
Battery voltage is below acceptable limits.
What to do
Charge the battery and ensure connections are secure.
W07warningCall your installer
Manual (PDF)
Bat Volt Low
Likely cause
Battery voltage is low.
What to do
Check battery health and connections, recharge if needed.
W08warningCall your installer
Manual (PDF)
Bat Volt High
Likely cause
Battery voltage is above acceptable limits.
What to do
Check battery health and if above settings, contact installer.
W12warningCall your installer
Manual (PDF)
Fan Fault
Likely cause
Cooling fan is not functioning properly.
What to do
Inspect the fan and ensure it is operational.
W13warningCall your installer
Manual (PDF)
BAT Power Down
Likely cause
Battery is powered down or disconnected.
What to do
Check battery connections and ensure they are secure.
W14warningCall your installer
Manual (PDF)
BMS Discharge Over Current
Likely cause
Battery Management System detected over current during discharge.
What to do
Reduce load or disconnect temporarily to allow BMS to reset.
W15warningCall your installer
Manual (PDF)
BMS Charge Over Current
Likely cause
Battery Management System detected over current during charging.
What to do
Check the charging setup and reduce input current as needed.
W16warningCall your installer
Manual (PDF)
BMS Over Volt
Likely cause
Battery voltage exceeds safe operational limits set in BMS.
What to do
Disconnect and monitor the battery for abnormalities.
W18warningCall your installer
Manual (PDF)
BMS Discharge Low Temp
Likely cause
Temperature is too low for battery operation.
What to do
Move to a warmer environment if possible.
W19warningCall your installer
Manual (PDF)
Bms Volt Imbalance
Likely cause
Voltage across battery cells is not balanced.
What to do
Monitor battery performance and check for defects.
W20warningCall your installer
Manual (PDF)
Bms Communicate Fault
Likely cause
Communication error within Battery Management System.
What to do
Restart the system and check connections.
W22warningCall your installer
Manual (PDF)
Bms Chg Temp Low
Likely cause
Battery temperature is too low for charging.
What to do
Warm the battery environment if possible.
W25warningCall your installer
Manual (PDF)
CT Reverse
Likely cause
Current Transformer connections are reversed.
What to do
Check and correct CT connections.

What it costs in Perth

$126,441

Typical installed price, before rebates

WA Battery Scheme: Depends on your inverter
Federal STCs: −$6,943
You’d pay about: $119,498

Explore your options

Which size band is your home?

Usable capacity, for one battery system

Smaller home: 10–15 kWh
Medium home: 20–30 kWh
Big home: 30–40 kWh
Very big home: 40+ kWh

This battery is one unit in the very big home band. The WA rebate caps at 10 kWh, but that is a rebate limit, not a sizing guide.

The federal rebate shrinks each year

STC value for this 140.49 kWh battery

How it compares

The KSTAR BC143DE2 against the closest-sized batteries from other brands.

Specification	KSTAR BC143DE2KSTAR	Sigenergy SigenStack M2-0.5C-BST-12/144.69 kWhSigenergy	Sigenergy SigenStack M2-1C-BST-12/144.69 kWhSigenergy

Usable capacity?	140.49 kWhbest value	140.4 kWh	140.4 kWh
Continuous power?	50 kW	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	98%best value	92%	92%
Warranty	5 years	10 yearsbest value	10 yearsbest value
Chemistry	LFP	LFP	LFP

Specs from the CEC register and datasheet enrichment. Indicative — confirm exact figures with your installer.