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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.

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CEC approved: June 2025Report outdated info

BYD LV Flex

Name: BYD LV Flex
Brand: BYD

Battery-Box series

CEC Approved

View datasheet (PDF)

Part of Battery-Box — see all configurations

Usable capacity: 5 kWh
Continuous power: 3.6 kW
Peak power: 5.4 kW
Round-trip efficiency: 95%
Warranty: 10 yr
Chemistry: Lithium Iron Phosphate (cobalt-free)

Full specifications

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.

Cell & chemistry

Chemistry: Lithium Iron Phosphate (cobalt-free)
Cell type: LFP

Capacity & power

Nominal capacity: 5 kWh
Usable capacity: 5 kWh
Continuous power: 3.6 kW
Peak power: 5.4 kW
Depth of discharge: 100%
Round-trip efficiency: 95%
Nominal voltage: 51.2 V

Lifespan & degradation

Capacity retained at year 10: 60%
Warranted throughput: 68.31 MWh

Modularity & stacking

Modular / stackable: Yes
Maximum stack: 320 kWh

Backup & grid services

Backup capable: Yes
VPP ready: No

Physical

Dimensions (H×W×D): 525 × 482 × 132 mm
Weight: 47 kg
IP rating: IP20

Operating environment

Operating temperature: -10°C to 50°C

Resources

Datasheet Warranty terms Installation guide

Warranty and support

Warranty terms and Australian support structure.

The BYD Battery-Box Premium is warranted for 10 years against defects and to retain at least 60% capacity, but not for damage due to unauthorized modifications. To claim, provide proof of ownership to BYD.

Duration

years

Throughput

68.31

MWh

Max Temp

50°

celsius

Max Backup

Level 0

No Backup

Australian support structure

Australian Office10 years in AU market

BYD Australia

Direct manufacturer warranty through Australian subsidiary.

Perth climate suitability

Suited to Perth climate

Rated to 50°C, which covers Perth's hottest days.

Key warranty terms

•Depth of Discharge: 100% usable capacity
•Round-trip Efficiency: 95% rated
•Annual Degradation: ~2.5% per year expected
•Installation: Must be installed by SAA-accredited installer
•Operating Conditions: -10°C to 50°C

✓ TransferableFull replacement≥60% capacity at year 10

Warranty Document Datasheet Compare Warranties

WA Battery Scheme eligibility

Check eligibility

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 BYD

View Full Profile →

Years in AU Market10+ years

Local SupportNot verified

CEC-Listed Products45 models

10yr AU

CEC-approved products since 2016

10 years in the Australian market

Fault & error codes — BYD Battery-Box

Extracted from the installation manual

14 documented

Showing 14 of 14. The official install manual is the authoritative source — always confirm before acting.

1criticalCall your installer
Manual (PDF)
DC cable connection incorrect
Likely cause
Incorrect connection of DC cables.
What to do
Check and correct the DC cable connections immediately.
11criticalCall your installer
Manual (PDF)
BMS and BMU communication failure
Likely cause
Communication between the Battery Management System and Unit has failed.
What to do
Contact an installer for assistance with troubleshooting this communication issue.
12criticalCall your installer
Manual (PDF)
Inverter communication failure
Likely cause
The inverter does not communicate properly with the energy storage system.
What to do
Check the inverter connections and settings. If needed, contact your installer.
13criticalCall your installer
Manual (PDF)
Address registration failed
Likely cause
Failure in registering the address of the system components.
What to do
Contact technical support for guidance on address configuration.
14criticalCall your installer
Manual (PDF)
System initiating failed
Likely cause
The system failed to initiate properly after startup.
What to do
Seek professional assistance for diagnosis and repair.
2criticalCall your installer
Manual (PDF)
Precharge transistor or relay failure
Likely cause
Failure in the precharge circuit.
What to do
Contact an installer for further assistance.
3criticalCall your installer
Manual (PDF)
BIC communication failed
Likely cause
Faulty communication with Battery Information Collector.
What to do
Check the communication setup. If error persists, contact an installer.
4criticalCall your installer
Manual (PDF)
Battery sensor failure
Likely cause
Malfunction in battery sensor hardware.
What to do
Seek assistance from an installer to check and replace the battery sensor.
5criticalCall your installer
Manual (PDF)
BCU voltage sensor faulty
Likely cause
Voltage sensor in Battery Control Unit is malfunctioning.
What to do
Contact a professional installer to inspect and rectify the issue.
6criticalCall your installer
Manual (PDF)
Current sensor failure
Likely cause
Fault in the current sensing equipment.
What to do
Immediate professional help is required to resolve the issue.
7criticalCall your installer
Manual (PDF)
Cell data abnormal
Likely cause
Abnormalities detected in battery cell data readings.
What to do
Contact your installer to evaluate the battery setup.
8criticalCall your installer
Manual (PDF)
Precharge failed
Likely cause
Failed precharging procedure.
What to do
Consult an installer for a detailed inspection and resolution.
9criticalCall your installer
Manual (PDF)
BIC balancing failed
Likely cause
Failed balancing operation on Battery Information Collector.
What to do
Request assistance from a qualified installer.
10info
Manual (PDF)
Reserved
Likely cause
Not applicable; reserved for future use.
What to do
No action required at this time.

Perth pricing

Typical installed price

$5,800

WA State RebateSubject to eligibility

Federal STCs-$1,357

After Rebates~$4,443

Prices are estimates. Final pricing depends on installation requirements. STC value is based on the current certificate price of about $39.9.

The WA Battery Scheme rebate (up to $1,300) requires a Synergy-approved (SSL) inverter and VPP enrolment — not all systems qualify, so it is not included above. Confirm eligibility with your installer.

Explore your options

Insufficient Data for Scoring

3 of 5 critical specs available (need 4)

Part of the BYD Battery-Box

See all configurations in this series →

Compare options

Compare this battery with other models to find the best fit for your needs.

Compare Products

How it compares

The BYD LV Flex against the closest-sized batteries from other brands.

Specification	BYD LV FlexBYD	Alpha ESS SMILE-M-BAT-5PAlpha ESS	Anker X1-B5-HAnker

Usable capacity?	5 kWh	5 kWh	5 kWh
Continuous power?	3.6 kW	Not verified	Not verified
Peak power?	5.4 kW	Not verified	Not verified

Round-trip efficiency?	95%best value	92%	92%
Warranty	10 years	10 years	10 years
Chemistry	Lithium Iron Phosphate (cobalt-free)	LFP	LFP

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

BYD LV Flex

Battery-Box series

CEC Approved

View datasheet (PDF)

Part of Battery-Box — see all configurations

Usable capacity: 5 kWh
Continuous power: 3.6 kW
Peak power: 5.4 kW
Round-trip efficiency: 95%
Warranty: 10 yr
Chemistry: Lithium Iron Phosphate (cobalt-free)

Full specifications

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.

Cell & chemistry

Chemistry: Lithium Iron Phosphate (cobalt-free)
Cell type: LFP

Capacity & power

Nominal capacity: 5 kWh
Usable capacity: 5 kWh
Continuous power: 3.6 kW
Peak power: 5.4 kW
Depth of discharge: 100%
Round-trip efficiency: 95%
Nominal voltage: 51.2 V

Lifespan & degradation

Capacity retained at year 10: 60%
Warranted throughput: 68.31 MWh

Modularity & stacking

Modular / stackable: Yes
Maximum stack: 320 kWh

Backup & grid services

Backup capable: Yes
VPP ready: No

Physical

Dimensions (H×W×D): 525 × 482 × 132 mm
Weight: 47 kg
IP rating: IP20

Operating environment

Operating temperature: -10°C to 50°C

Resources

Datasheet Warranty terms Installation guide

Warranty and support

Warranty terms and Australian support structure.

Duration

years

Throughput

68.31

MWh

Max Temp

50°

celsius

Max Backup

Level 0

No Backup

Australian support structure

Australian Office10 years in AU market

BYD Australia

Direct manufacturer warranty through Australian subsidiary.

Perth climate suitability

Suited to Perth climate

Rated to 50°C, which covers Perth's hottest days.

Key warranty terms

•Depth of Discharge: 100% usable capacity
•Round-trip Efficiency: 95% rated
•Annual Degradation: ~2.5% per year expected
•Installation: Must be installed by SAA-accredited installer
•Operating Conditions: -10°C to 50°C

✓ TransferableFull replacement≥60% capacity at year 10

Warranty Document Datasheet Compare Warranties

WA Battery Scheme eligibility

Check eligibility

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 BYD

View Full Profile →

Years in AU Market10+ years

Local SupportNot verified

CEC-Listed Products45 models

10yr AU

CEC-approved products since 2016

10 years in the Australian market

Fault & error codes — BYD Battery-Box

Extracted from the installation manual

14 documented

Showing 14 of 14. The official install manual is the authoritative source — always confirm before acting.

1criticalCall your installer
Manual (PDF)
DC cable connection incorrect
Likely cause
Incorrect connection of DC cables.
What to do
Check and correct the DC cable connections immediately.
11criticalCall your installer
Manual (PDF)
BMS and BMU communication failure
Likely cause
Communication between the Battery Management System and Unit has failed.
What to do
Contact an installer for assistance with troubleshooting this communication issue.
12criticalCall your installer
Manual (PDF)
Inverter communication failure
Likely cause
The inverter does not communicate properly with the energy storage system.
What to do
Check the inverter connections and settings. If needed, contact your installer.
13criticalCall your installer
Manual (PDF)
Address registration failed
Likely cause
Failure in registering the address of the system components.
What to do
Contact technical support for guidance on address configuration.
14criticalCall your installer
Manual (PDF)
System initiating failed
Likely cause
The system failed to initiate properly after startup.
What to do
Seek professional assistance for diagnosis and repair.
2criticalCall your installer
Manual (PDF)
Precharge transistor or relay failure
Likely cause
Failure in the precharge circuit.
What to do
Contact an installer for further assistance.
3criticalCall your installer
Manual (PDF)
BIC communication failed
Likely cause
Faulty communication with Battery Information Collector.
What to do
Check the communication setup. If error persists, contact an installer.
4criticalCall your installer
Manual (PDF)
Battery sensor failure
Likely cause
Malfunction in battery sensor hardware.
What to do
Seek assistance from an installer to check and replace the battery sensor.
5criticalCall your installer
Manual (PDF)
BCU voltage sensor faulty
Likely cause
Voltage sensor in Battery Control Unit is malfunctioning.
What to do
Contact a professional installer to inspect and rectify the issue.
6criticalCall your installer
Manual (PDF)
Current sensor failure
Likely cause
Fault in the current sensing equipment.
What to do
Immediate professional help is required to resolve the issue.
7criticalCall your installer
Manual (PDF)
Cell data abnormal
Likely cause
Abnormalities detected in battery cell data readings.
What to do
Contact your installer to evaluate the battery setup.
8criticalCall your installer
Manual (PDF)
Precharge failed
Likely cause
Failed precharging procedure.
What to do
Consult an installer for a detailed inspection and resolution.
9criticalCall your installer
Manual (PDF)
BIC balancing failed
Likely cause
Failed balancing operation on Battery Information Collector.
What to do
Request assistance from a qualified installer.
10info
Manual (PDF)
Reserved
Likely cause
Not applicable; reserved for future use.
What to do
No action required at this time.

Perth pricing

Typical installed price

$5,800

WA State RebateSubject to eligibility

Federal STCs-$1,357

After Rebates~$4,443

Prices are estimates. Final pricing depends on installation requirements. STC value is based on the current certificate price of about $39.9.

Explore your options

Insufficient Data for Scoring

3 of 5 critical specs available (need 4)

Part of the BYD Battery-Box

See all configurations in this series →

Compare options

Compare this battery with other models to find the best fit for your needs.

Compare Products

How it compares

The BYD LV Flex against the closest-sized batteries from other brands.

Specification	BYD LV FlexBYD	Alpha ESS SMILE-M-BAT-5PAlpha ESS	Anker X1-B5-HAnker

Usable capacity?	5 kWh	5 kWh	5 kWh
Continuous power?	3.6 kW	Not verified	Not verified
Peak power?	5.4 kW	Not verified	Not verified

Round-trip efficiency?	95%best value	92%	92%
Warranty	10 years	10 years	10 years
Chemistry	Lithium Iron Phosphate (cobalt-free)	LFP	LFP

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

BYD LV Flex

Full specifications

Cell & chemistry

Capacity & power

Lifespan & degradation

Modularity & stacking

Backup & grid services

Physical

Operating environment

Australian support structure

Perth climate suitability

Key warranty terms

Fault & error codes — BYD Battery-Box

How it compares

More from BYD

BYD Solar Panels

Want to take the next step?

BYD LV Flex

Full specifications

Cell & chemistry

Capacity & power

Lifespan & degradation

Modularity & stacking

Backup & grid services

Physical

Operating environment

Australian support structure

Perth climate suitability

Key warranty terms

Fault & error codes — BYD Battery-Box

How it compares

More from BYD

BYD Solar Panels

Want to take the next step?