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Battery inverter · Alpha ESS · SMILE-M5 series · CEC approved March 2026

Alpha ESS SMILE-M5-B-INV

CEC listing: SMILE-M5-B-INV (AS4777-2 2020)

A 5 kW single-phase battery inverter.

Installed in Perth, typical: ~$2,125; Estimate for the inverter alone — your quote will vary
Rated power: 5kW; How much solar it can run at once
Battery-ready: Yes; Battery inverter: it runs the battery, alongside your solar inverter

Datasheet (PDF)Compare inverters See the whole SMILE-M5 series

What we can tell you

Read from the figures on this page. No review written yet.

It is a battery inverter: it runs a battery, and pairs with a separate solar inverter.
It runs on a standard single-phase supply.
We can't confirm it is on Synergy's approved list — a battery paired with it needs that for the WA Battery Scheme, so ask your installer.
It is CEC-approved, which a new install needs to qualify for STCs.

Key specs, in plain terms

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

Rated power How much solar it can turn into usable power at once: 5kW
Phases Runs on a standard single-phase supply: Single
Type Runs a battery; pairs with a separate solar inverter: Battery
Warranty How long Alpha ESS Co Ltd stands behind it: 10yr

Full datasheet

Every figure on file for the Alpha ESS SMILE-M5-B-INV, by section.

Full datasheet, by section
Specification	Value
Power & output
Nominal power	5 kW
Physical
Dimensions (H×W×D)	390 × 620 × 240 mm
Weight	19.5 kg
IP rating	IP65
Installation requirements
Top clearance	200 mm
Side clearance	150 mm
AC breaker	40 A
Cable gauge	6 mm²
Earthing method	TN-S
DNSP pre-approval	Yes
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.

Features & compatibility

Battery compatible

Yes

Backup capable

Yes

CEC approval details

CEC approved

18 Mar 2026

Approval expiry

18 Mar 2029

Status

Active

Eligible for rebates

Yes

About Alpha ESS Co Ltd

Years in AU Market

9 years

Australian Office

Yes

CEC-Approved Batteries

CEC-Approved Panels

What it costs in Perth

Typical installed, inverter only

$1,500–$2,750

Estimate confidence: Medium

Prices vary by installer, configuration and site complexity. Get exact quotes from installers you choose.

Explore your options

Compare quotes from installers you choose

WA compliance

Synergy approved list: Not confirmed
ESM compliant: Check

Western Power approval is required for every grid-connected install. Under Emergency Solar Management, a new system must be remotely manageable, or take an export limit instead — ask your installer to confirm this inverter’s ESM status.

Perth performance

Estimate for a full-size array on this inverter

Daily yield: 21.3 kWh
Annual yield: 7,756 kWh

At 5 peak sun hours a day (BOM) with a 15% system derate.

Australian office

Has local presence

Website

alphaess.au

9 years in Australian market

How it compares

The Alpha ESS SMILE-M5-B-INV against the closest-power inverters from other brands.

Specification	Alpha ESS SMILE-M5-B-INVAlpha ESS	Energizer FORCE 5.0HSEnergizer	Energizer Force 5.0HT+Energizer

Rated power?	5 kW	5 kW	5 kW
Max efficiency?	0.0%	0.0%	0.0%
MPPT trackers?	Not verified	Not verified	Not verified

Phases	Single-phase	Single-phase	Three-phase
Type	Battery	Hybrid	Hybrid
Battery ready	Yes	Yes	Yes
Warranty	10 years	Not verified	Not verified

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

Documents

10-year inverter warranty

Alpha ESS SMILE-M5-B-INV

The warranty covers the solar product for 10 years with a key exclusion for improper installation. Claims can be made through customer support.

AI-summarised from the manufacturer warranty document. Always confirm against the linked PDF before relying on it for a claim.

Coverage shape: Full-replacement coverage
If you sell the home: Does not transfer with the home
What voids it: Non-accredited installation or modification.
Environment limits: Operating temperatures exceeding 50°C.

Read the official warranty document (PDF)

Fault & error codes — Alpha ESS SMILE-M5-B-INV

From the install manual

41 documented

Showing 41 of 41. The official install manual is the authoritative source — always confirm before acting.

100007criticalCall your installer
Manual (PDF)
Insulation Fault
Likely cause
Wet installation environment or rainy weather.
What to do
Check environment and improve if needed; inspect each solar string.
100008criticalCall your installer
Manual (PDF)
GFCI Fault
Likely cause
Insulation fault detected or inverter failure.
What to do
Refer to abnormal insulation guidance.
100025criticalCall your installer
Manual (PDF)
Battery Over Voltage
Likely cause
Fault during initial installation or operation.
What to do
Check battery wiring and BMS communication.
100026criticalCall your installer
Manual (PDF)
Battery Under Voltage
Likely cause
Battery voltage not within range, or switch issues.
What to do
Inspect battery status and connections.
100027criticalCall your installer
Manual (PDF)
Battery Disconnection
Likely cause
Wiring issues or DC switch not closed.
What to do
Inspect battery connections and communication.
100042criticalCall your installer
Manual (PDF)
Output Short Circuit
Likely cause
Indicates backup load issues or fault.
What to do
Disconnect load and restart.
100060criticalCall your installer
Manual (PDF)
DSP Self Check
Likely cause
Internal issues requiring service.
What to do
Contact customer service for assistance.
100123criticalCall your installer
Manual (PDF)
DSP Communication Failure
Likely cause
Communication loss in components.
What to do
Contact customer service for support.
110005criticalCall your installer
Manual (PDF)
Battery Stops Running Alarm
Likely cause
Critical issue needing investigation.
What to do
Check battery health and contact customer service.
110027criticalCall your installer
Manual (PDF)
LN Reverse Alarm
Likely cause
Check wiring for live and neutral switch.
What to do
Ensure correct wiring.
110029criticalCall your installer
Manual (PDF)
GFCI Alarm
Likely cause
Confirmation of electrical faults.
What to do
Check electrical systems; contact support if needed.
110030criticalCall your installer
Manual (PDF)
ISO Alarm
Likely cause
System issues needing review.
What to do
Continuous monitor with potential service needed.
110036criticalCall your installer
Manual (PDF)
FLASH ID Alarm
Likely cause
System setup error requiring check.
What to do
Contact customer service for remedial actions.
110039criticalCall your installer
Manual (PDF)
Machine Type Alarm
Likely cause
Firmware mismatch with physical model.
What to do
Contact customer support for clarification.
100005warning
Manual (PDF)
Bus Over Voltage
Likely cause
Occasional occurrence, can recover automatically.
What to do
No action needed, monitor situation.
100010warning
Manual (PDF)
Grid Relay Fault
Likely cause
Short-term grid abnormality.
What to do
No action needed if occasional; monitor and check if frequent.
100012warning
Manual (PDF)
PV Reverse Connection
Likely cause
Incorrectly connected PV cables.
What to do
Reconnect cables correctly.
100030warning
Manual (PDF)
Battery Over-Discharge
Likely cause
Backup load too high.
What to do
Reduce load and restart.
100038warningCall your installer
Manual (PDF)
Output DC Over Current
Likely cause
Short-term grid abnormality.
What to do
Monitor and contact support if persistent.
100041warningCall your installer
Manual (PDF)
Output DC Over Voltage
Likely cause
Short-term abnormality.
What to do
Monitor and contact support if persists.
100043warning
Manual (PDF)
Output Overload
Likely cause
Backup load exceeds limit.
What to do
Reduce load and check connections.
100046warningCall your installer
Manual (PDF)
DC Input Disturbance
Likely cause
Occasional occurrence.
What to do
Monitor and contact support if persists.
100052warningCall your installer
Manual (PDF)
Backup Over Voltage
Likely cause
Occasional issue, inverter may recover automatically.
What to do
Monitor and contact if persists.
100054warningCall your installer
Manual (PDF)
DC Bus Undervoltage
Likely cause
Occasionally occurs and may recover automatically.
What to do
Monitor; contact support if continues.
100058warningCall your installer
Manual (PDF)
AFCI Check Protect
Likely cause
Needs restart to check fault persistency.
What to do
Restart system and monitor.
100122warning
Manual (PDF)
EEPROM RW Failure
Likely cause
Issues after remote upgrade.
What to do
Monitor, no action required unless persists.
100145warning
Manual (PDF)
12V Auxiliary Power Fault
Likely cause
Occasional fault that may recover automatically.
What to do
Monitor; check if issue persists.
110004warningCall your installer
Manual (PDF)
DC Power Alarm
Likely cause
Grid over voltage condition.
What to do
Check grid voltage settings; contact service if needed.
110006warningCall your installer
Manual (PDF)
Over Temperature Alarm
Likely cause
Humidity or exposure to high temperature.
What to do
Ensure ventilation; check ambient conditions.
110014warning
Manual (PDF)
PV Over Voltage
Likely cause
Incorrect wiring or high temp conditions.
What to do
Check PV module setup.
110021warningCall your installer
Manual (PDF)
Grid Loss Alarm
Likely cause
Short-term grid loss; may recover automatically.
What to do
Monitor; contact local power operator.
110022warningCall your installer
Manual (PDF)
Grid Voltage Alarm
Likely cause
Check grid connection status.
What to do
Monitor voltage status; consult service.
110023warningCall your installer
Manual (PDF)
Grid Frequency Alarm
Likely cause
Short-term grid anomaly; typically recovers.
What to do
Monitor; contact support if persists.
110024warningCall your installer
Manual (PDF)
10 Min Grid Voltage Alarm
Likely cause
Sliding average voltage exceeds standard.
What to do
Check voltage settings and adjustments.
110034warningCall your installer
Manual (PDF)
Fan Abnormal Alarm
Likely cause
Fan failures or slow operation; check functionality.
What to do
Inspect and replace if necessary.
110037warningCall your installer
Manual (PDF)
Read Flash Alarm
Likely cause
Persistent issue requiring investigation.
What to do
Monitor conditions; contact service if continues.
110040warningCall your installer
Manual (PDF)
Inverter Voltage Low Alarm
Likely cause
Low light conditions or short circuits.
What to do
Monitor and check PV connections.
110048warningCall your installer
Manual (PDF)
No PV Input Alarm
Likely cause
Occasional occurrence; check circuits.
What to do
Inspect conditions of PV setup.
110049warning
Manual (PDF)
Input Power Limit Alarm
Likely cause
Low light or operational limitations.
What to do
Typically no action required; monitor.
110050warningCall your installer
Manual (PDF)
Output Power Limit Alarm
Likely cause
Reset system to check fault clarity.
What to do
Restart system to clear issues.
110059warningCall your installer
Manual (PDF)
Grid Waveform Abnormal Alarm
Likely cause
Short-term grid anomalies.
What to do
Monitor and contact service if frequently recorded.

Part of the Alpha ESS SMILE-M5 series

Compare every Alpha ESS SMILE-M5 variant side by side →

More Alpha ESS Co Ltd Inverters

M30-INV-AU (AS4777-2 2020)

30 kW · 3φ

M50-INV-AU (AS4777-2 2020)

50 kW · 3φ

SMILE-B3-PLUS (AS4777-2 2020)

3 kW · 1φ

SMILE-B3-PLUS II (AS4777-2 2020)

3 kW · 1φ

SMILE-B3-PLUS III (AS4777-2 2020)

3 kW · 1φ

SMILE-B3-PLUS IV (AS4777-2 2020)

3 kW · 1φ

View all Alpha ESS Co Ltd inverters

More from Alpha ESS Co Ltd

Other CEC-approved products from Alpha ESS Co Ltd available in Australia.

Alpha ESS Co Ltd Batteries

M38314-108SNW

97.61 kWh · LFP

M38314-120SNW

108.45 kWh · LFP

M38314-132SNW

119.3 kWh · LFP

M38314-144SNW

130.14 kWh · LFP

M38314-156SNW

140.99 kWh · LFP

M38314-168SNW

151.83 kWh · LFP

View all Alpha ESS Co Ltd batteries

View full Alpha ESS Co Ltd 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.

About this data

All inverter specifications are sourced from the CEC Approved Products Register. Specifications are provided as published by the CEC and may differ from manufacturer datasheets. Verify current specifications with the manufacturer or your installer before purchasing. Not all listed models may be currently available in Western Australia.

Battery inverter · Alpha ESS · SMILE-M5 series · CEC approved March 2026

Alpha ESS SMILE-M5-B-INV

CEC listing: SMILE-M5-B-INV (AS4777-2 2020)

A 5 kW single-phase battery inverter.

Installed in Perth, typical: ~$2,125; Estimate for the inverter alone — your quote will vary
Rated power: 5kW; How much solar it can run at once
Battery-ready: Yes; Battery inverter: it runs the battery, alongside your solar inverter

Datasheet (PDF)Compare inverters See the whole SMILE-M5 series

Spotted something outdated?

What we can tell you

Read from the figures on this page. No review written yet.

It is a battery inverter: it runs a battery, and pairs with a separate solar inverter.
It runs on a standard single-phase supply.
We can't confirm it is on Synergy's approved list — a battery paired with it needs that for the WA Battery Scheme, so ask your installer.
It is CEC-approved, which a new install needs to qualify for STCs.

Key specs, in plain terms

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

Rated power How much solar it can turn into usable power at once: 5kW
Phases Runs on a standard single-phase supply: Single
Type Runs a battery; pairs with a separate solar inverter: Battery
Warranty How long Alpha ESS Co Ltd stands behind it: 10yr

Full datasheet

Every figure on file for the Alpha ESS SMILE-M5-B-INV, by section.

Full datasheet, by section
Specification	Value
Power & output
Nominal power	5 kW
Physical
Dimensions (H×W×D)	390 × 620 × 240 mm
Weight	19.5 kg
IP rating	IP65
Installation requirements
Top clearance	200 mm
Side clearance	150 mm
AC breaker	40 A
Cable gauge	6 mm²
Earthing method	TN-S
DNSP pre-approval	Yes
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.

Features & compatibility

Battery compatible

Yes

Backup capable

Yes

CEC approval details

CEC approved

18 Mar 2026

Approval expiry

18 Mar 2029

Status

Active

Eligible for rebates

Yes

About Alpha ESS Co Ltd

Years in AU Market

9 years

Australian Office

Yes

CEC-Approved Batteries

CEC-Approved Panels

What it costs in Perth

Typical installed, inverter only

$1,500–$2,750

Estimate confidence: Medium

Prices vary by installer, configuration and site complexity. Get exact quotes from installers you choose.

Explore your options

Compare quotes from installers you choose

WA compliance

Synergy approved list: Not confirmed
ESM compliant: Check

Perth performance

Estimate for a full-size array on this inverter

Daily yield: 21.3 kWh
Annual yield: 7,756 kWh

At 5 peak sun hours a day (BOM) with a 15% system derate.

Australian office

Has local presence

Website

alphaess.au

9 years in Australian market

How it compares

The Alpha ESS SMILE-M5-B-INV against the closest-power inverters from other brands.

Specification	Alpha ESS SMILE-M5-B-INVAlpha ESS	Energizer FORCE 5.0HSEnergizer	Energizer Force 5.0HT+Energizer

Rated power?	5 kW	5 kW	5 kW
Max efficiency?	0.0%	0.0%	0.0%
MPPT trackers?	Not verified	Not verified	Not verified

Phases	Single-phase	Single-phase	Three-phase
Type	Battery	Hybrid	Hybrid
Battery ready	Yes	Yes	Yes
Warranty	10 years	Not verified	Not verified

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

Documents

10-year inverter warranty

Alpha ESS SMILE-M5-B-INV

The warranty covers the solar product for 10 years with a key exclusion for improper installation. Claims can be made through customer support.

AI-summarised from the manufacturer warranty document. Always confirm against the linked PDF before relying on it for a claim.

Coverage shape: Full-replacement coverage
If you sell the home: Does not transfer with the home
What voids it: Non-accredited installation or modification.
Environment limits: Operating temperatures exceeding 50°C.

Read the official warranty document (PDF)

Fault & error codes — Alpha ESS SMILE-M5-B-INV

From the install manual

41 documented

Showing 41 of 41. The official install manual is the authoritative source — always confirm before acting.

100007criticalCall your installer
Manual (PDF)
Insulation Fault
Likely cause
Wet installation environment or rainy weather.
What to do
Check environment and improve if needed; inspect each solar string.
100008criticalCall your installer
Manual (PDF)
GFCI Fault
Likely cause
Insulation fault detected or inverter failure.
What to do
Refer to abnormal insulation guidance.
100025criticalCall your installer
Manual (PDF)
Battery Over Voltage
Likely cause
Fault during initial installation or operation.
What to do
Check battery wiring and BMS communication.
100026criticalCall your installer
Manual (PDF)
Battery Under Voltage
Likely cause
Battery voltage not within range, or switch issues.
What to do
Inspect battery status and connections.
100027criticalCall your installer
Manual (PDF)
Battery Disconnection
Likely cause
Wiring issues or DC switch not closed.
What to do
Inspect battery connections and communication.
100042criticalCall your installer
Manual (PDF)
Output Short Circuit
Likely cause
Indicates backup load issues or fault.
What to do
Disconnect load and restart.
100060criticalCall your installer
Manual (PDF)
DSP Self Check
Likely cause
Internal issues requiring service.
What to do
Contact customer service for assistance.
100123criticalCall your installer
Manual (PDF)
DSP Communication Failure
Likely cause
Communication loss in components.
What to do
Contact customer service for support.
110005criticalCall your installer
Manual (PDF)
Battery Stops Running Alarm
Likely cause
Critical issue needing investigation.
What to do
Check battery health and contact customer service.
110027criticalCall your installer
Manual (PDF)
LN Reverse Alarm
Likely cause
Check wiring for live and neutral switch.
What to do
Ensure correct wiring.
110029criticalCall your installer
Manual (PDF)
GFCI Alarm
Likely cause
Confirmation of electrical faults.
What to do
Check electrical systems; contact support if needed.
110030criticalCall your installer
Manual (PDF)
ISO Alarm
Likely cause
System issues needing review.
What to do
Continuous monitor with potential service needed.
110036criticalCall your installer
Manual (PDF)
FLASH ID Alarm
Likely cause
System setup error requiring check.
What to do
Contact customer service for remedial actions.
110039criticalCall your installer
Manual (PDF)
Machine Type Alarm
Likely cause
Firmware mismatch with physical model.
What to do
Contact customer support for clarification.
100005warning
Manual (PDF)
Bus Over Voltage
Likely cause
Occasional occurrence, can recover automatically.
What to do
No action needed, monitor situation.
100010warning
Manual (PDF)
Grid Relay Fault
Likely cause
Short-term grid abnormality.
What to do
No action needed if occasional; monitor and check if frequent.
100012warning
Manual (PDF)
PV Reverse Connection
Likely cause
Incorrectly connected PV cables.
What to do
Reconnect cables correctly.
100030warning
Manual (PDF)
Battery Over-Discharge
Likely cause
Backup load too high.
What to do
Reduce load and restart.
100038warningCall your installer
Manual (PDF)
Output DC Over Current
Likely cause
Short-term grid abnormality.
What to do
Monitor and contact support if persistent.
100041warningCall your installer
Manual (PDF)
Output DC Over Voltage
Likely cause
Short-term abnormality.
What to do
Monitor and contact support if persists.
100043warning
Manual (PDF)
Output Overload
Likely cause
Backup load exceeds limit.
What to do
Reduce load and check connections.
100046warningCall your installer
Manual (PDF)
DC Input Disturbance
Likely cause
Occasional occurrence.
What to do
Monitor and contact support if persists.
100052warningCall your installer
Manual (PDF)
Backup Over Voltage
Likely cause
Occasional issue, inverter may recover automatically.
What to do
Monitor and contact if persists.
100054warningCall your installer
Manual (PDF)
DC Bus Undervoltage
Likely cause
Occasionally occurs and may recover automatically.
What to do
Monitor; contact support if continues.
100058warningCall your installer
Manual (PDF)
AFCI Check Protect
Likely cause
Needs restart to check fault persistency.
What to do
Restart system and monitor.
100122warning
Manual (PDF)
EEPROM RW Failure
Likely cause
Issues after remote upgrade.
What to do
Monitor, no action required unless persists.
100145warning
Manual (PDF)
12V Auxiliary Power Fault
Likely cause
Occasional fault that may recover automatically.
What to do
Monitor; check if issue persists.
110004warningCall your installer
Manual (PDF)
DC Power Alarm
Likely cause
Grid over voltage condition.
What to do
Check grid voltage settings; contact service if needed.
110006warningCall your installer
Manual (PDF)
Over Temperature Alarm
Likely cause
Humidity or exposure to high temperature.
What to do
Ensure ventilation; check ambient conditions.
110014warning
Manual (PDF)
PV Over Voltage
Likely cause
Incorrect wiring or high temp conditions.
What to do
Check PV module setup.
110021warningCall your installer
Manual (PDF)
Grid Loss Alarm
Likely cause
Short-term grid loss; may recover automatically.
What to do
Monitor; contact local power operator.
110022warningCall your installer
Manual (PDF)
Grid Voltage Alarm
Likely cause
Check grid connection status.
What to do
Monitor voltage status; consult service.
110023warningCall your installer
Manual (PDF)
Grid Frequency Alarm
Likely cause
Short-term grid anomaly; typically recovers.
What to do
Monitor; contact support if persists.
110024warningCall your installer
Manual (PDF)
10 Min Grid Voltage Alarm
Likely cause
Sliding average voltage exceeds standard.
What to do
Check voltage settings and adjustments.
110034warningCall your installer
Manual (PDF)
Fan Abnormal Alarm
Likely cause
Fan failures or slow operation; check functionality.
What to do
Inspect and replace if necessary.
110037warningCall your installer
Manual (PDF)
Read Flash Alarm
Likely cause
Persistent issue requiring investigation.
What to do
Monitor conditions; contact service if continues.
110040warningCall your installer
Manual (PDF)
Inverter Voltage Low Alarm
Likely cause
Low light conditions or short circuits.
What to do
Monitor and check PV connections.
110048warningCall your installer
Manual (PDF)
No PV Input Alarm
Likely cause
Occasional occurrence; check circuits.
What to do
Inspect conditions of PV setup.
110049warning
Manual (PDF)
Input Power Limit Alarm
Likely cause
Low light or operational limitations.
What to do
Typically no action required; monitor.
110050warningCall your installer
Manual (PDF)
Output Power Limit Alarm
Likely cause
Reset system to check fault clarity.
What to do
Restart system to clear issues.
110059warningCall your installer
Manual (PDF)
Grid Waveform Abnormal Alarm
Likely cause
Short-term grid anomalies.
What to do
Monitor and contact service if frequently recorded.

Part of the Alpha ESS SMILE-M5 series

Compare every Alpha ESS SMILE-M5 variant side by side →

More Alpha ESS Co Ltd Inverters

M30-INV-AU (AS4777-2 2020)

30 kW · 3φ

M50-INV-AU (AS4777-2 2020)

50 kW · 3φ

SMILE-B3-PLUS (AS4777-2 2020)

3 kW · 1φ

SMILE-B3-PLUS II (AS4777-2 2020)

3 kW · 1φ

SMILE-B3-PLUS III (AS4777-2 2020)

3 kW · 1φ

SMILE-B3-PLUS IV (AS4777-2 2020)

3 kW · 1φ

View all Alpha ESS Co Ltd inverters