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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CEC approved: Mar 2026Report outdated info

Alpha ESS SMILE-S5 V (AS4777-2 2020)

Name: Alpha ESS SMILE-S5 V (AS4777-2 2020)
Brand: Alpha ESS

SMILE-S5 series

CEC Approved

View datasheet (PDF)

Part of SMILE-S5 — see all configurations

Usable capacity: 23.94 kWh
Round-trip efficiency: 92%
Warranty: 5 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: 25.2 kWh
Usable capacity: 23.94 kWh

Physical

Dimensions (H×W×D): 210 × 610 × 627 mm
Weight: 30 kg

Operating environment

Operating temperature: -10°C to 50°C

Resources

Datasheet Warranty terms Installation guide

Warranty and support

Warranty terms and Australian support structure.

This warranty covers the product for 5 years, ensuring replacement or repair of faulty units. Exclusions include damages from improper installation and environmental factors.

Duration

years

Throughput

∞

MWh

Max Temp

50°

celsius

Max Backup

Level 0

No Backup

Australian support structure

Australian Office9 years in AU market

Alpha ESS Australia

Chinese manufacturer with 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: 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: -10°C to 50°C

✓ TransferableFull replacement

Warranty Document Datasheet Compare Warranties

WA Battery Scheme eligibility

Likely eligible

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
On the Synergy Supported Solutions List (SSL) for remote management.
Synergy SSL approved inverter
Pairs with ALPHA ESS CO LTD SMILE.
VPP activation ready
Ready for Synergy VPP participation.
WA Battery Scheme rebate
Up to $1,300 for Synergy customers (10kWh max eligible).
Synergy Battery Rewards
Earns credits during VPP activation events (up to 30/year).
Interest-free loan
Qualifies for up to $10,000 interest-free.

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

About Alpha ESS

View Full Profile →

Years in AU Market9+ years

Local SupportNot verified

CEC-Listed Products62 models

9yr AU

CEC-approved products since 2017

9 years in the Australian market

Fault & error codes — Alpha ESS SMILE-S5

Extracted from the installation manual

10 documented

Showing 10 of 10. The official install manual is the authoritative source — always confirm before acting.

100007criticalCall your installer
Manual (PDF)
Insulation fault
Likely cause
Moisture in the installation environment
What to do
Inspect the installation environment; improve if needed; check panels and cables for humidity.
100008criticalCall your installer
Manual (PDF)
GFCI fault
Likely cause
Ground fault detection failure
What to do
Check insulation and wiring; contact support if error persists.
100025criticalCall your installer
Manual (PDF)
Battery over voltage
Likely cause
High battery voltage during charging
What to do
Check battery voltage; adjust configuration if necessary.
100026criticalCall your installer
Manual (PDF)
Battery under voltage
Likely cause
Low battery voltage
What to do
Inspect battery connections and switches; ensure proper voltage.
100038criticalCall your installer
Manual (PDF)
Output DC over current
Likely cause
Overload on output
What to do
Reduce load or disconnect backup, then restart inverter.
100060criticalCall your installer
Manual (PDF)
DSP self-check error
Likely cause
Internal compatibility issue
What to do
Contact customer support for repair.
100005warning
Manual (PDF)
Bus over voltage
Likely cause
Transient voltage spikes
What to do
The inverter may recover automatically; if it persists, contact support.
100010warningCall your installer
Manual (PDF)
Grid relay fault
Likely cause
Transient grid instability
What to do
Monitor grid condition; if persistent, consult support.
100027warningCall your installer
Manual (PDF)
Battery lose
Likely cause
Disconnection in battery wiring
What to do
Check battery connections and DC switch.
100012info
Manual (PDF)
PV reverse connection
Likely cause
Incorrect wiring of PV cables
What to do
Verify wiring of PV strings and correct any reverse connections.

Perth pricing

Typical installed price

$21,546

WA State Rebate-$1,300

Federal STCs-$5,387

After Rebates~$14,859

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 Alpha ESS SMILE-S5

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 Alpha ESS SMILE-S5 V (AS4777-2 2020) against the closest-sized batteries from other brands.

Specification	Alpha ESS SMILE-S5 V (AS4777-2 2020)Alpha ESS	Roypow 5*RBmax5.1LRoypow	Roypow 5*RBmax5.1L2Roypow

Usable capacity?	23.94 kWh	23.95 kWhbest value	23.95 kWhbest value
Continuous power?	Not verified	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	92%	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.

Alpha ESS SMILE-S5 V (AS4777-2 2020)

SMILE-S5 series

CEC Approved

View datasheet (PDF)

Part of SMILE-S5 — see all configurations

Usable capacity: 23.94 kWh
Round-trip efficiency: 92%
Warranty: 5 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: 25.2 kWh
Usable capacity: 23.94 kWh

Physical

Dimensions (H×W×D): 210 × 610 × 627 mm
Weight: 30 kg

Operating environment

Operating temperature: -10°C to 50°C

Resources

Datasheet Warranty terms Installation guide

Warranty and support

Warranty terms and Australian support structure.

This warranty covers the product for 5 years, ensuring replacement or repair of faulty units. Exclusions include damages from improper installation and environmental factors.

Duration

years

Throughput

∞

MWh

Max Temp

50°

celsius

Max Backup

Level 0

No Backup

Australian support structure

Australian Office9 years in AU market

Alpha ESS Australia

Chinese manufacturer with 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: 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: -10°C to 50°C

✓ TransferableFull replacement

Warranty Document Datasheet Compare Warranties

WA Battery Scheme eligibility

Likely eligible

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
On the Synergy Supported Solutions List (SSL) for remote management.
Synergy SSL approved inverter
Pairs with ALPHA ESS CO LTD SMILE.
VPP activation ready
Ready for Synergy VPP participation.
WA Battery Scheme rebate
Up to $1,300 for Synergy customers (10kWh max eligible).
Synergy Battery Rewards
Earns credits during VPP activation events (up to 30/year).
Interest-free loan
Qualifies for up to $10,000 interest-free.

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

About Alpha ESS

View Full Profile →

Years in AU Market9+ years

Local SupportNot verified

CEC-Listed Products62 models

9yr AU

CEC-approved products since 2017

9 years in the Australian market

Fault & error codes — Alpha ESS SMILE-S5

Extracted from the installation manual

10 documented

Showing 10 of 10. The official install manual is the authoritative source — always confirm before acting.

100007criticalCall your installer
Manual (PDF)
Insulation fault
Likely cause
Moisture in the installation environment
What to do
Inspect the installation environment; improve if needed; check panels and cables for humidity.
100008criticalCall your installer
Manual (PDF)
GFCI fault
Likely cause
Ground fault detection failure
What to do
Check insulation and wiring; contact support if error persists.
100025criticalCall your installer
Manual (PDF)
Battery over voltage
Likely cause
High battery voltage during charging
What to do
Check battery voltage; adjust configuration if necessary.
100026criticalCall your installer
Manual (PDF)
Battery under voltage
Likely cause
Low battery voltage
What to do
Inspect battery connections and switches; ensure proper voltage.
100038criticalCall your installer
Manual (PDF)
Output DC over current
Likely cause
Overload on output
What to do
Reduce load or disconnect backup, then restart inverter.
100060criticalCall your installer
Manual (PDF)
DSP self-check error
Likely cause
Internal compatibility issue
What to do
Contact customer support for repair.
100005warning
Manual (PDF)
Bus over voltage
Likely cause
Transient voltage spikes
What to do
The inverter may recover automatically; if it persists, contact support.
100010warningCall your installer
Manual (PDF)
Grid relay fault
Likely cause
Transient grid instability
What to do
Monitor grid condition; if persistent, consult support.
100027warningCall your installer
Manual (PDF)
Battery lose
Likely cause
Disconnection in battery wiring
What to do
Check battery connections and DC switch.
100012info
Manual (PDF)
PV reverse connection
Likely cause
Incorrect wiring of PV cables
What to do
Verify wiring of PV strings and correct any reverse connections.

Perth pricing

Typical installed price

$21,546

WA State Rebate-$1,300

Federal STCs-$5,387

After Rebates~$14,859

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 Alpha ESS SMILE-S5

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 Alpha ESS SMILE-S5 V (AS4777-2 2020) against the closest-sized batteries from other brands.

Specification	Alpha ESS SMILE-S5 V (AS4777-2 2020)Alpha ESS	Roypow 5*RBmax5.1LRoypow	Roypow 5*RBmax5.1L2Roypow

Usable capacity?	23.94 kWh	23.95 kWhbest value	23.95 kWhbest value
Continuous power?	Not verified	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	92%	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.

Alpha ESS SMILE-S5 V (AS4777-2 2020)

Full specifications

Cell & chemistry

Capacity & power

Physical

Operating environment

Australian support structure

Perth climate suitability

Key warranty terms

Fault & error codes — Alpha ESS SMILE-S5

How it compares

More from Alpha ESS

Alpha ESS Inverters

Want to take the next step?

Alpha ESS SMILE-S5 V (AS4777-2 2020)

Full specifications

Cell & chemistry

Capacity & power

Physical

Operating environment

Australian support structure

Perth climate suitability

Key warranty terms

Fault & error codes — Alpha ESS SMILE-S5

How it compares

More from Alpha ESS

Alpha ESS Inverters

Want to take the next step?