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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CEC approved: Apr 2025Report outdated info

SAJ CHS2-50K-T6-204.8V/280Ah/51.5kWh (AS4777-2 2020)

Name: SAJ CHS2-50K-T6-204.8V/280Ah/51.5kWh (AS4777-2 2020)
Brand: SAJ

CHS2 series

CEC Approved

View datasheet (PDF)

Part of CHS2 — see all configurations

Usable capacity: 51.5 kWh
Round-trip efficiency: 92%
Warranty: 10 yr
Chemistry: LFP

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: LFP

Capacity & power

Nominal capacity: 57.3 kWh
Usable capacity: 51.5 kWh

Physical

IP rating: IP55

Operating environment

Operating temperature: -30°C to 50°C

Resources

Datasheet Warranty terms Installation guide

Warranty and support

Warranty terms and Australian support structure.

This warranty covers defects in materials and workmanship for up to ten years, ensuring the battery retains 70% of its usable energy. Exclusions include improper installation and environmental damages. To claim, report issues within 30 days to the distributor or SAJ.

Duration

years

Throughput

∞

MWh

Max Temp

50°

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

Suited to Perth climate

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

Key warranty terms

•Depth of Discharge: 90% usable capacity
•Round-trip Efficiency: 92% rated
•Annual Degradation: ~2.5% per year expected
•Installation: Must be installed by SAA-accredited installer
•Operating Conditions: -30°C to 50°C

✗ Non-transferableFull replacement

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) for full eligibility, 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. 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 SAJ

View Full Profile →

Years in AU Market8+ years

Local SupportNot verified

CEC-Listed Products30 models

8yr AU

CEC-approved products since 2018

8 years in the Australian market

Fault & error codes — SAJ CHS2

Extracted from the installation manual

8 documented

Showing 8 of 8. The official install manual is the authoritative source — always confirm before acting.

1criticalCall your installer
Manual (PDF)
Master Relay Error
Likely cause
The live wire is grounded on the grid side or the grid voltage is too low.
What to do
Measure whether the voltage between the ground wire and the neutral wire is greater than 10V. Measure whether the grid voltage is too low.
2criticalCall your installer
Manual (PDF)
Master EEPROM Error
Likely cause
Internal EEPROM failure of the inverter.
What to do
After turning off the AC/DC switch for 5 minutes, restart the inverter. Check whether the firmware is upgraded to the correct version.
7criticalCall your installer
Manual (PDF)
DCI Device Error
Likely cause
The inverter DCI device fails.
What to do
After turning off the AC and DC switch for 5 minutes, restart the inverter.
8criticalCall your installer
Manual (PDF)
Current Sensor Error
Likely cause
The inverter current sensor malfunctions.
What to do
After turning off the AC and DC switch for 5 minutes, restart the inverter. Check whether the positive and negative poles of the string MC4 connectors are reversed.
3warningCall your installer
Manual (PDF)
Master Temperature High Error
Likely cause
The inverter temperature is too high.
What to do
Check whether the heat dissipation channel of the inverter is blocked. Check whether the inverter is installed in a location exposed to direct sunlight.
4warningCall your installer
Manual (PDF)
Master Temperature Low Error
Likely cause
The inverter temperature is too low.
What to do
Check whether the ambient temperature of the inverter installation location is too low.
5warningCall your installer
Manual (PDF)
Lost Communication M<->S
Likely cause
Internal communication of the inverter is lost.
What to do
After turning off the AC and DC switch for 5 minutes, restart the inverter.
6warningCall your installer
Manual (PDF)
GFCI Device Error
Likely cause
The inverter GFCI device fails.
What to do
After turning off the AC and DC switch for 5 minutes, restart the inverter.

Perth pricing

Typical installed price

$46,350

WA State RebateSubject to eligibility

Federal STCs-$6,943

After Rebates~$39,407

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 SAJ CHS2

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 SAJ CHS2-50K-T6-204.8V/280Ah/51.5kWh (AS4777-2 2020) against the closest-sized batteries from other brands.

Specification	SAJ CHS2-50K-T6-204.8V/280Ah/51.5kWh (AS4777-2 2020)SAJ	Esysunhome ESYSUNHOME10KWH+H-50Esysunhome	Deye BOS-G50Deye

Usable capacity?	51.5 kWhbest value	51.43 kWh	51.2 kWh
Continuous power?	Not verified	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	92%	92%	92%
Warranty	10 years	10 years	10 years
Chemistry	LFP	LFP	LFP

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

SAJ CHS2-50K-T6-204.8V/280Ah/51.5kWh (AS4777-2 2020)

CHS2 series

CEC Approved

View datasheet (PDF)

Part of CHS2 — see all configurations

Usable capacity: 51.5 kWh
Round-trip efficiency: 92%
Warranty: 10 yr
Chemistry: LFP

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: LFP

Capacity & power

Nominal capacity: 57.3 kWh
Usable capacity: 51.5 kWh

Physical

IP rating: IP55

Operating environment

Operating temperature: -30°C to 50°C

Resources

Datasheet Warranty terms Installation guide

Warranty and support

Warranty terms and Australian support structure.

Duration

years

Throughput

∞

MWh

Max Temp

50°

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

Suited to Perth climate

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

Key warranty terms

•Depth of Discharge: 90% usable capacity
•Round-trip Efficiency: 92% rated
•Annual Degradation: ~2.5% per year expected
•Installation: Must be installed by SAA-accredited installer
•Operating Conditions: -30°C to 50°C

✗ Non-transferableFull replacement

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 SAJ

View Full Profile →

Years in AU Market8+ years

Local SupportNot verified

CEC-Listed Products30 models

8yr AU

CEC-approved products since 2018

8 years in the Australian market

Fault & error codes — SAJ CHS2

Extracted from the installation manual

8 documented

Showing 8 of 8. The official install manual is the authoritative source — always confirm before acting.

1criticalCall your installer
Manual (PDF)
Master Relay Error
Likely cause
The live wire is grounded on the grid side or the grid voltage is too low.
What to do
Measure whether the voltage between the ground wire and the neutral wire is greater than 10V. Measure whether the grid voltage is too low.
2criticalCall your installer
Manual (PDF)
Master EEPROM Error
Likely cause
Internal EEPROM failure of the inverter.
What to do
After turning off the AC/DC switch for 5 minutes, restart the inverter. Check whether the firmware is upgraded to the correct version.
7criticalCall your installer
Manual (PDF)
DCI Device Error
Likely cause
The inverter DCI device fails.
What to do
After turning off the AC and DC switch for 5 minutes, restart the inverter.
8criticalCall your installer
Manual (PDF)
Current Sensor Error
Likely cause
The inverter current sensor malfunctions.
What to do
After turning off the AC and DC switch for 5 minutes, restart the inverter. Check whether the positive and negative poles of the string MC4 connectors are reversed.
3warningCall your installer
Manual (PDF)
Master Temperature High Error
Likely cause
The inverter temperature is too high.
What to do
Check whether the heat dissipation channel of the inverter is blocked. Check whether the inverter is installed in a location exposed to direct sunlight.
4warningCall your installer
Manual (PDF)
Master Temperature Low Error
Likely cause
The inverter temperature is too low.
What to do
Check whether the ambient temperature of the inverter installation location is too low.
5warningCall your installer
Manual (PDF)
Lost Communication M<->S
Likely cause
Internal communication of the inverter is lost.
What to do
After turning off the AC and DC switch for 5 minutes, restart the inverter.
6warningCall your installer
Manual (PDF)
GFCI Device Error
Likely cause
The inverter GFCI device fails.
What to do
After turning off the AC and DC switch for 5 minutes, restart the inverter.

Perth pricing

Typical installed price

$46,350

WA State RebateSubject to eligibility

Federal STCs-$6,943

After Rebates~$39,407

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 SAJ CHS2

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 SAJ CHS2-50K-T6-204.8V/280Ah/51.5kWh (AS4777-2 2020) against the closest-sized batteries from other brands.

Specification	SAJ CHS2-50K-T6-204.8V/280Ah/51.5kWh (AS4777-2 2020)SAJ	Esysunhome ESYSUNHOME10KWH+H-50Esysunhome	Deye BOS-G50Deye

Usable capacity?	51.5 kWhbest value	51.43 kWh	51.2 kWh
Continuous power?	Not verified	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	92%	92%	92%
Warranty	10 years	10 years	10 years
Chemistry	LFP	LFP	LFP

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

SAJ CHS2-50K-T6-204.8V/280Ah/51.5kWh (AS4777-2 2020)

Full specifications

Cell & chemistry

Capacity & power

Physical

Operating environment

Australian support structure

Perth climate suitability

Key warranty terms

Fault & error codes — SAJ CHS2

How it compares

More from SAJ

SAJ Inverters

Want to take the next step?

SAJ CHS2-50K-T6-204.8V/280Ah/51.5kWh (AS4777-2 2020)

Full specifications

Cell & chemistry

Capacity & power

Physical

Operating environment

Australian support structure

Perth climate suitability

Key warranty terms

Fault & error codes — SAJ CHS2

How it compares

More from SAJ

SAJ Inverters

Want to take the next step?