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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.

WA Battery Scheme rebate: Depends on your inverterThe battery needs to pair with an inverter on Synergy's list; we don't know your inverter
Usable capacity: 140.49kWh
Warranty: 5yrs

Datasheet (PDF)

BC143DE2: the short answer

WA Battery SchemeThe battery needs to pair with an inverter on Synergy's list; we don't know your inverter: ConditionalThe battery needs to pair with an inverter on Synergy's list; we don't know your inverter
Continuous powerRuns enough for a whole home, air conditioning included: 50kWRuns enough for a whole home, air conditioning included

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.

Key specs, in plain terms

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

Usable capacity: 140.49kWh; How much energy it stores for you to use
Continuous power: 50kW; How much it can run at once: enough for a whole home, air conditioning included
Round-trip efficiency: 98%; How much of the energy you store comes back out
Warranty: 5yr; 80% of capacity guaranteed at the end of it
Battery chemistry: LFP; Lithium iron phosphate, the long-cycle-life type
Size and weight: 75kg; 2380 × 1100 × 1100 mm, roughly a large suitcase on the wall

Warranty and support

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.

Product: 5 years; transferable; full replacement
At year 10: At least 80% of capacity
Throughput: 2.62 MWh
Installation: Must be installed by an SAA-accredited installer
Support: Not verifiedWe have not verified this brand's Australian support structure. Confirm warranty arrangements with the manufacturer or your installer.

Warranty document Datasheet Compare warranties

WA Battery Scheme eligibility

Conditional

Whether this battery pairs with an inverter on Synergy's list, whether it can join a VPP, and whether it qualifies for the state rebate. Rebate and STC amounts are shown in the pricing panel.

This battery is AC-coupled. To get the WA rebate, the interest-free loan, VPP payments or DEBS export credits, it needs a gateway device from Synergy's approved list (for example SMA or Redback), or an inverter and battery from the same brand (Sungrow or Fronius). Without one, exports are capped at 1.5kW.

Some third-party gateways struggle to pass compliance testing, and adding anything to an AC-coupled system later means the whole system has to be re-checked. For many homes, switching to a hybrid (DC-coupled) inverter is the simpler path. AC vs DC coupling

CSIP-AUS compliant: Inverter must be CSIP-AUS compliant under the current WA framework.
VPP activation ready: Needs to pair with an inverter on Synergy's list.
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

Full datasheet

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

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

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.

About KSTAR

Years in the Australian market: 4+ (CEC-approved products since 2022)
Local support: Not verified
CEC-listed products: 38 models

View full profile →

What it costs in Perth

We price batteries by size rather than by model. The average installed price before rebates:

10 kWh: $7,000–$9,000
20 kWh: $10,000–$15,000

Solar Battery Perth’s estimate, Oct 2026. Other sizes are not priced here, and a quote prices this model.

Rebates on this battery

WA Battery Scheme: Depends on your inverter
Federal STCs: −$6,943

The WA Battery Scheme (up to $1,300) needs VPP enrolment, and the battery needs to pair with an inverter on Synergy's list. We don't know which inverter you'd pair this with, so we can't say whether it applies. Ask your installer. STCs assume about $39.9 a certificate.

Explore your options

Which size band is your home?

Usable capacity, for one battery system

Smaller home: 10 to 15 kWh
Medium home: 20 to 30 kWh
Big home: 30 to 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.

Does waiting change the rebate?

Estimated federal rebate (STCs) 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 kWhhighest	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%	Not verified	Not verified
Warranty	5 years	Not verified	Not verified
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

3.68 kW

BluE-S 3680D-M1

3.68 kW

BluE-S 5000D

5 kW

BluE-S 5000D-M1

5 kW

E10KT-D22

10 kW · 3φ

E12KT-D22

12 kW · 3φ

View all KSTAR inverters

View full KSTAR manufacturer profile

Want to take the next step?

Get a quote from an installer from our network that covers your area. You choose whether to act on it. 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.

Explore your options Compare batteries

Spotted something outdated?

Home battery · KSTAR · CEC approved July 2026

KSTAR BC143DE2

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

WA Battery Scheme rebate: Depends on your inverterThe battery needs to pair with an inverter on Synergy's list; we don't know your inverter
Usable capacity: 140.49kWh
Warranty: 5yrs

Datasheet (PDF)

BC143DE2: the short answer

WA Battery SchemeThe battery needs to pair with an inverter on Synergy's list; we don't know your inverter: ConditionalThe battery needs to pair with an inverter on Synergy's list; we don't know your inverter
Continuous powerRuns enough for a whole home, air conditioning included: 50kWRuns enough for a whole home, air conditioning included

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.

Key specs, in plain terms

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

Usable capacity: 140.49kWh; How much energy it stores for you to use
Continuous power: 50kW; How much it can run at once: enough for a whole home, air conditioning included
Round-trip efficiency: 98%; How much of the energy you store comes back out
Warranty: 5yr; 80% of capacity guaranteed at the end of it
Battery chemistry: LFP; Lithium iron phosphate, the long-cycle-life type
Size and weight: 75kg; 2380 × 1100 × 1100 mm, roughly a large suitcase on the wall

Warranty and support

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.

Product: 5 years; transferable; full replacement
At year 10: At least 80% of capacity
Throughput: 2.62 MWh
Installation: Must be installed by an SAA-accredited installer
Support: Not verifiedWe have not verified this brand's Australian support structure. Confirm warranty arrangements with the manufacturer or your installer.

Warranty document Datasheet Compare warranties

WA Battery Scheme eligibility

Conditional

Whether this battery pairs with an inverter on Synergy's list, whether it can join a VPP, and whether it qualifies for the state rebate. Rebate and STC amounts are shown in the pricing panel.

CSIP-AUS compliant: Inverter must be CSIP-AUS compliant under the current WA framework.
VPP activation ready: Needs to pair with an inverter on Synergy's list.
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

Full datasheet

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

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

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.

About KSTAR

Years in the Australian market: 4+ (CEC-approved products since 2022)
Local support: Not verified
CEC-listed products: 38 models

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What it costs in Perth

We price batteries by size rather than by model. The average installed price before rebates:

10 kWh: $7,000–$9,000
20 kWh: $10,000–$15,000

Solar Battery Perth’s estimate, Oct 2026. Other sizes are not priced here, and a quote prices this model.

Rebates on this battery

WA Battery Scheme: Depends on your inverter
Federal STCs: −$6,943

Explore your options

Which size band is your home?

Usable capacity, for one battery system

Smaller home: 10 to 15 kWh
Medium home: 20 to 30 kWh
Big home: 30 to 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.

Does waiting change the rebate?

Estimated federal rebate (STCs) 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 kWhhighest	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%	Not verified	Not verified
Warranty	5 years	Not verified	Not verified
Chemistry	LFP	LFP	LFP

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