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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CEC approved: July 2025Report outdated info

Alpha ESS SMILE-M-BAT-13.9P III

Name: Alpha ESS SMILE-M-BAT-13.9P III
Brand: Alpha ESS

SMILE-M series

CEC Approved

View datasheet (PDF)

Part of SMILE-M — see all configurations

Usable capacity: 41.99 kWh
Continuous power: 5.04 kW
Peak power: 5.04 kW
Round-trip efficiency: 100%
Warranty: 10 yr
Chemistry: LFP(LiFePO4)

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(LiFePO4)
Cell type: Modular

Capacity & power

Nominal capacity: 41.99 kWh
Usable capacity: 41.99 kWh
Continuous power: 5.04 kW
Peak power: 5.04 kW
Depth of discharge: 100%
Round-trip efficiency: 100%
Nominal voltage: 48 V

Modularity & stacking

Modular / stackable: Yes
Maximum stack: 55.96 kWh

Backup & grid services

Backup capable: Yes
VPP ready: No

Physical

Dimensions (H×W×D): 710 × 620 × 240 mm
Weight: 115 kg
IP rating: IP65

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 your Alpha ESS solar products for 10 years, ensuring performance and covering defects in materials and workmanship. Important exclusions include improper installation and environmental damages.

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: 100% usable capacity
•Round-trip Efficiency: 100% 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-M

Extracted from the installation manual

10 documented

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

100025criticalCall your installer
Manual (PDF)
Battery Over Voltage (OVP)
Likely cause
Battery voltage exceeds acceptable limits during operation.
What to do
Check battery connections and BMS communication.
100026criticalCall your installer
Manual (PDF)
Battery Under Voltage (UVP)
Likely cause
Battery voltage drops below acceptable limits.
What to do
Check battery breaker and connection status.
100027criticalCall your installer
Manual (PDF)
Battery Disconnection
Likely cause
Loose wiring or disconnected battery.
What to do
Check all battery connections and ensure the DC switch is closed.
100032criticalCall your installer
Manual (PDF)
Output Short Circuit
Likely cause
Backup load is shorted.
What to do
Disconnect the load and restart the inverter.
100005warning
Manual (PDF)
Bus Over Voltage (OVP)
Likely cause
Occurs occasionally; can recover automatically
What to do
No action required unless it persists, then contact customer service.
100007warningCall your installer
Manual (PDF)
Insulation Fault
Likely cause
Wet installation environment or rainy weather may trigger alarms.
What to do
Improve installation environment; check insulation resistance.
100008warningCall your installer
Manual (PDF)
GFCI Fault
Likely cause
Occurs frequently; may be linked to insulation issues or system faults.
What to do
Check insulation; contact customer service if the issue persists.
100010warningCall your installer
Manual (PDF)
Grid Relay Fault
Likely cause
Short-term grid issue; inverter can typically recover automatically.
What to do
If it occurs frequently, refer to grid voltage high alarm guidance.
100012warning
Manual (PDF)
PV Reverse Connection
Likely cause
Incorrect connection of PV strings.
What to do
Reconnect PV cables correctly.
100030warning
Manual (PDF)
Battery Discharge Over Current (OCP)
Likely cause
Excessive backup load reducing battery life.
What to do
Reduce load and restart inverter.

Perth pricing

Typical installed price

$39,891

WA State Rebate-$1,300

Federal STCs-$6,623

After Rebates~$31,968

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-M

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-M-BAT-13.9P III against the closest-sized batteries from other brands.

Specification	Alpha ESS SMILE-M-BAT-13.9P IIIAlpha ESS	Sigenergy SigenStor-10S-42.18 (AS4777-2 2020)Sigenergy	Sigenergy SigenStor-10S-42.26 (AS4777-2 2020)Sigenergy

Usable capacity?	41.99 kWh	42 kWhbest value	42 kWhbest value
Continuous power?	5.04 kW	Not verified	Not verified
Peak power?	5.04 kW	Not verified	Not verified

Round-trip efficiency?	100%best value	92%	92%
Warranty	10 years	10 years	10 years
Chemistry	LFP(LiFePO4)	LFP	LFP

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

Alpha ESS SMILE-M-BAT-13.9P III

SMILE-M series

CEC Approved

View datasheet (PDF)

Part of SMILE-M — see all configurations

Usable capacity: 41.99 kWh
Continuous power: 5.04 kW
Peak power: 5.04 kW
Round-trip efficiency: 100%
Warranty: 10 yr
Chemistry: LFP(LiFePO4)

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(LiFePO4)
Cell type: Modular

Capacity & power

Nominal capacity: 41.99 kWh
Usable capacity: 41.99 kWh
Continuous power: 5.04 kW
Peak power: 5.04 kW
Depth of discharge: 100%
Round-trip efficiency: 100%
Nominal voltage: 48 V

Modularity & stacking

Modular / stackable: Yes
Maximum stack: 55.96 kWh

Backup & grid services

Backup capable: Yes
VPP ready: No

Physical

Dimensions (H×W×D): 710 × 620 × 240 mm
Weight: 115 kg
IP rating: IP65

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

∞

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: 100% usable capacity
•Round-trip Efficiency: 100% 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-M

Extracted from the installation manual

10 documented

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

100025criticalCall your installer
Manual (PDF)
Battery Over Voltage (OVP)
Likely cause
Battery voltage exceeds acceptable limits during operation.
What to do
Check battery connections and BMS communication.
100026criticalCall your installer
Manual (PDF)
Battery Under Voltage (UVP)
Likely cause
Battery voltage drops below acceptable limits.
What to do
Check battery breaker and connection status.
100027criticalCall your installer
Manual (PDF)
Battery Disconnection
Likely cause
Loose wiring or disconnected battery.
What to do
Check all battery connections and ensure the DC switch is closed.
100032criticalCall your installer
Manual (PDF)
Output Short Circuit
Likely cause
Backup load is shorted.
What to do
Disconnect the load and restart the inverter.
100005warning
Manual (PDF)
Bus Over Voltage (OVP)
Likely cause
Occurs occasionally; can recover automatically
What to do
No action required unless it persists, then contact customer service.
100007warningCall your installer
Manual (PDF)
Insulation Fault
Likely cause
Wet installation environment or rainy weather may trigger alarms.
What to do
Improve installation environment; check insulation resistance.
100008warningCall your installer
Manual (PDF)
GFCI Fault
Likely cause
Occurs frequently; may be linked to insulation issues or system faults.
What to do
Check insulation; contact customer service if the issue persists.
100010warningCall your installer
Manual (PDF)
Grid Relay Fault
Likely cause
Short-term grid issue; inverter can typically recover automatically.
What to do
If it occurs frequently, refer to grid voltage high alarm guidance.
100012warning
Manual (PDF)
PV Reverse Connection
Likely cause
Incorrect connection of PV strings.
What to do
Reconnect PV cables correctly.
100030warning
Manual (PDF)
Battery Discharge Over Current (OCP)
Likely cause
Excessive backup load reducing battery life.
What to do
Reduce load and restart inverter.

Perth pricing

Typical installed price

$39,891

WA State Rebate-$1,300

Federal STCs-$6,623

After Rebates~$31,968

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-M

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-M-BAT-13.9P III against the closest-sized batteries from other brands.

Specification	Alpha ESS SMILE-M-BAT-13.9P IIIAlpha ESS	Sigenergy SigenStor-10S-42.18 (AS4777-2 2020)Sigenergy	Sigenergy SigenStor-10S-42.26 (AS4777-2 2020)Sigenergy

Usable capacity?	41.99 kWh	42 kWhbest value	42 kWhbest value
Continuous power?	5.04 kW	Not verified	Not verified
Peak power?	5.04 kW	Not verified	Not verified

Round-trip efficiency?	100%best value	92%	92%
Warranty	10 years	10 years	10 years
Chemistry	LFP(LiFePO4)	LFP	LFP

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

Alpha ESS SMILE-M-BAT-13.9P III

Full specifications

Cell & chemistry

Capacity & power

Modularity & stacking

Backup & grid services

Physical

Operating environment

Australian support structure

Perth climate suitability

Key warranty terms

Fault & error codes — Alpha ESS SMILE-M

How it compares

More from Alpha ESS

Alpha ESS Inverters

Want to take the next step?

Alpha ESS SMILE-M-BAT-13.9P III

Full specifications

Cell & chemistry

Capacity & power

Modularity & stacking

Backup & grid services

Physical

Operating environment

Australian support structure

Perth climate suitability

Key warranty terms

Fault & error codes — Alpha ESS SMILE-M

How it compares

More from Alpha ESS

Alpha ESS Inverters

Want to take the next step?