Loading Solar Battery Perth...

Home battery · Alpha ESS · CEC approved June 2025

Alpha ESS SMILE-M-BAT-5P IV

A 20 kWh home battery with backup power — medium home size, the 20–30 kWh band.

Installed in Perth, after rebates: ~$11,952; Typical estimate — your own quote will vary
WA Battery Scheme rebate: −$1,300; With a Synergy-approved inverter and VPP enrolment
Usable capacity: 20kWh; Medium home size — the 20–30 kWh band

Datasheet (PDF)See the whole SMILE-M-BAT series

What we can tell you

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

20 kWh sits in the medium home band (20–30 kWh).
It is CEC-approved, which is a condition of both the federal STC discount and the WA Battery Scheme.
We can't score it: a value score needs a price and full specs, and without them any number would be guesswork.

Key specs, in plain terms

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

Usable capacity How much energy it stores for you to use: 20kWh
Continuous power How much it can run at once — most of a home, but not everything at full tilt: 5kW
Round-trip efficiency How much of the energy you store comes back out: 97%
Depth of discharge How much of the battery you can actually use: 90%
Warranty 70% of capacity guaranteed at the end of it: 10yr
Battery chemistry Lithium iron phosphate — the long-cycle-life type: LFP

Full datasheet

Every figure on file for the Alpha ESS SMILE-M-BAT, by section.

Full datasheet, by section
Specification	Value
Cell & chemistry
Chemistry	LFP
Capacity & power
Nominal capacity	20 kWh
Usable capacity	20 kWh
Continuous power	5 kW
Round-trip efficiency	96.5%
Lifespan & degradation
Capacity retained at year 10	70%
Warranted throughput	3.12 MWh
Backup & grid services
Backup capable	Yes
Off-grid capable	Yes
Physical
Dimensions (H×W×D)	210 × 610 × 627 mm
Weight	30 kg
IP rating	IP65
Operating environment
Operating temperature	-10°C to 50°C
Connectivity & monitoring
Coupling	all-in-one
Installation requirements
Top clearance	200 mm
Side clearance	150 mm
Front 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.

Documents

Warranty and support

Warranty terms and Australian support structure.

This 10-year warranty covers manufacturing defects and ensures at least 70% capacity retention. Claims can be made via Alpha ESS or authorized resellers by following listed instructions.

Duration

years

Throughput

3.12

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 heat

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

Key warranty terms

•Depth of Discharge: 90% usable capacity
•Round-trip Efficiency: 97% 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≥70% capacity at year 10

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 Products76 models

9yr AU

CEC-approved products since 2017

9 years in the Australian market

Fault & error codes — Alpha ESS SMILE-M-BAT

Extracted from the installation manual

26 documented

Showing 26 of 26. The official install manual is the authoritative source — always confirm before acting.

100042criticalCall your installer
Manual (PDF)
Output short
Likely cause
A short circuit in the backup load.
What to do
Disconnect backup load and restart inverter; if unresolved, contact customer service.
100043criticalCall your installer
Manual (PDF)
Output overload
Likely cause
Backup load exceeds limit.
What to do
Reduce load and restart the inverter; if unresolved, contact customer service.
Error01criticalCall your installer
Manual (PDF)
Hardware error
Likely cause
Internal system failure or malfunction
What to do
Wait for automated recovery. In case problem is not resolved, call in for repair.
Error03criticalCall your installer
Manual (PDF)
Hardware error
Likely cause
Internal system failure or malfunction
What to do
Call in for repair.
Error05criticalCall your installer
Manual (PDF)
Hardware error
Likely cause
Internal system failure or malfunction
What to do
Call in for repair.
Error09criticalCall your installer
Manual (PDF)
SN missing
Likely cause
Serial number not entered or recognized
What to do
Enter the serial number, restart the system or call in for repair.
Error11criticalCall your installer
Manual (PDF)
Software version inconsistent
Likely cause
Mismatch of software versions
What to do
Call installation for repair.
Error13critical
Manual (PDF)
MOS over temperature
Likely cause
Temperature exceeds operational limits
What to do
Power off the battery and turn on the battery after 30-40 minutes.
100005warning
Manual (PDF)
BUS OVP1
Likely cause
Voltage on the bus is too high.
What to do
If it happens occasionally, no action is required. If it persists, please contact customer service.
100007warningCall your installer
Manual (PDF)
Insulation fault
Likely cause
Possible wet installation environment or rainy weather causing alarms.
What to do
Confirm the installation environment and improve if necessary; check individual solar panel strings if alarm occurs frequently.
100008warningCall your installer
Manual (PDF)
GFCI fault
Likely cause
Ground Fault Circuit Interrupt failure due to potential insulation faults.
What to do
Check insulation conditions; if frequently paired with other alarms, contact customer service.
100010warningCall your installer
Manual (PDF)
Grid relay fault
Likely cause
An intermittent issue with the power grid.
What to do
If it occurs occasionally, no action is required. If frequent, check grid voltage high alarm guidance.
100012warning
Manual (PDF)
PV Reverse
Likely cause
Cables of PV strings are incorrectly connected.
What to do
Check the connections of the PV strings and reconnect if necessary.
100025warningCall your installer
Manual (PDF)
BAT OVP
Likely cause
Battery voltage is over the allowable range.
What to do
Check battery voltage and wiring; ensure BMS communication is normal.
100026warningCall your installer
Manual (PDF)
BAT UVP
Likely cause
Battery voltage under the allowable range.
What to do
Check if the battery breaker and inverter breaker are closed; check for BMS alarms.
100027warningCall your installer
Manual (PDF)
Battery lose
Likely cause
Faulty connection or communication issues with the battery.
What to do
Check battery wiring and DC switch status.
100030warning
Manual (PDF)
BAT1 discharge OCP
Likely cause
Over-discharge of the battery.
What to do
Reduce backup load, restart the inverter or allow auto-reset after 5 minutes.
100038warningCall your installer
Manual (PDF)
Output DC over current
Likely cause
Short-term grid issue causing high output current.
What to do
If it occurs occasionally, no action required; if persistent, contact customer service.
100041warningCall your installer
Manual (PDF)
Output DC over voltage
Likely cause
High voltage detected in the output.
What to do
If it occurs occasionally, no action is required; if persistent, contact customer service.
100059warningCall your installer
Manual (PDF)
Grid waveform abnormal alarm
Likely cause
Abnormality in grid conditions.
What to do
If it occurs frequently, contact local power operator.; if persistent, contact customer service.
Error06warning
Manual (PDF)
Circuit Breaker Open
Likely cause
The circuit breaker has tripped or has been opened
What to do
Close circuit breaker after shutting down the battery system.
Error07warning
Manual (PDF)
DIP difference
Likely cause
Inconsistent settings on DIP switches
What to do
Keep consistency of DIP switches, restart the system.
Error08warning
Manual (PDF)
LMU Disconnect(slave)
Likely cause
Communication cable issue
What to do
Reconnect the communication cable.
Error10warning
Manual (PDF)
LMU Disconnect(master)
Likely cause
Communication cable issue
What to do
Reconnect the communication cable.
Error12warning
Manual (PDF)
Multi master
Likely cause
Multiple devices are attempting to be masters
What to do
Restart all batteries.
100046info
Manual (PDF)
DC Input Disturbance
Likely cause
Occasional electrical disturbances during operation.
What to do
If it happens occasionally, no action is required; if persistent, contact customer service.

What it costs in Perth

$18,000

Typical installed price, before rebates

WA Battery Scheme: −$1,300
Federal STCs: −$4,748
You’d pay about: $11,952

The WA Battery Scheme pays $1,300 on this size when it is installed with a Synergy-approved inverter and enrolled in a VPP. STCs assume about $39.9 a certificate. Estimates only; your quote will vary.

Explore your options

Which size band is your home?

Usable capacity, for one battery system

Smaller home: 10–15 kWh
Medium home: 20–30 kWh
Big home: 30–40 kWh
Very big home: 40+ kWh

This battery is one unit in the medium home band. The WA rebate caps at 10 kWh, but that is a rebate limit, not a sizing guide.

Does waiting change the rebate?

Estimated federal rebate (STCs) for this 20 kWh battery

How it compares

The Alpha ESS SMILE-M-BAT-5P IV against the closest-sized batteries from other brands.

Specification	Alpha ESS SMILE-M-BAT-5P IVAlpha ESS	Ambrion AS3-10K-T-W-P4-AUSAmbrion	Ambrion AS3-12K-T-W-P4-AUSAmbrion

Usable capacity?	20 kWh	20 kWh	20 kWh
Continuous power?	5 kW	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	97%best value	92%	92%
Warranty	10 years	Not verified	Not verified
Chemistry	LFP	LFP	LFP

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

More from Alpha ESS

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

Alpha ESS 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 inverters

View full Alpha ESS 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.

This model is one entry in the desk's index of solar batteries for Perth — every CEC-approved battery on one comparable dataset.

Product Information Disclaimer:

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.

Home battery · Alpha ESS · CEC approved June 2025

Alpha ESS SMILE-M-BAT-5P IV

A 20 kWh home battery with backup power — medium home size, the 20–30 kWh band.

Installed in Perth, after rebates: ~$11,952; Typical estimate — your own quote will vary
WA Battery Scheme rebate: −$1,300; With a Synergy-approved inverter and VPP enrolment
Usable capacity: 20kWh; Medium home size — the 20–30 kWh band

Datasheet (PDF)See the whole SMILE-M-BAT series

Spotted something outdated?

What we can tell you

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

20 kWh sits in the medium home band (20–30 kWh).
It is CEC-approved, which is a condition of both the federal STC discount and the WA Battery Scheme.
We can't score it: a value score needs a price and full specs, and without them any number would be guesswork.

Key specs, in plain terms

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

Usable capacity How much energy it stores for you to use: 20kWh
Continuous power How much it can run at once — most of a home, but not everything at full tilt: 5kW
Round-trip efficiency How much of the energy you store comes back out: 97%
Depth of discharge How much of the battery you can actually use: 90%
Warranty 70% of capacity guaranteed at the end of it: 10yr
Battery chemistry Lithium iron phosphate — the long-cycle-life type: LFP

Full datasheet

Every figure on file for the Alpha ESS SMILE-M-BAT, by section.

Full datasheet, by section
Specification	Value
Cell & chemistry
Chemistry	LFP
Capacity & power
Nominal capacity	20 kWh
Usable capacity	20 kWh
Continuous power	5 kW
Round-trip efficiency	96.5%
Lifespan & degradation
Capacity retained at year 10	70%
Warranted throughput	3.12 MWh
Backup & grid services
Backup capable	Yes
Off-grid capable	Yes
Physical
Dimensions (H×W×D)	210 × 610 × 627 mm
Weight	30 kg
IP rating	IP65
Operating environment
Operating temperature	-10°C to 50°C
Connectivity & monitoring
Coupling	all-in-one
Installation requirements
Top clearance	200 mm
Side clearance	150 mm
Front 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.

Documents

Warranty and support

Warranty terms and Australian support structure.

This 10-year warranty covers manufacturing defects and ensures at least 70% capacity retention. Claims can be made via Alpha ESS or authorized resellers by following listed instructions.

Duration

years

Throughput

3.12

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 heat

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

Key warranty terms

•Depth of Discharge: 90% usable capacity
•Round-trip Efficiency: 97% 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≥70% capacity at year 10

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 Products76 models

9yr AU

CEC-approved products since 2017

9 years in the Australian market

Fault & error codes — Alpha ESS SMILE-M-BAT

Extracted from the installation manual

26 documented

Showing 26 of 26. The official install manual is the authoritative source — always confirm before acting.

100042criticalCall your installer
Manual (PDF)
Output short
Likely cause
A short circuit in the backup load.
What to do
Disconnect backup load and restart inverter; if unresolved, contact customer service.
100043criticalCall your installer
Manual (PDF)
Output overload
Likely cause
Backup load exceeds limit.
What to do
Reduce load and restart the inverter; if unresolved, contact customer service.
Error01criticalCall your installer
Manual (PDF)
Hardware error
Likely cause
Internal system failure or malfunction
What to do
Wait for automated recovery. In case problem is not resolved, call in for repair.
Error03criticalCall your installer
Manual (PDF)
Hardware error
Likely cause
Internal system failure or malfunction
What to do
Call in for repair.
Error05criticalCall your installer
Manual (PDF)
Hardware error
Likely cause
Internal system failure or malfunction
What to do
Call in for repair.
Error09criticalCall your installer
Manual (PDF)
SN missing
Likely cause
Serial number not entered or recognized
What to do
Enter the serial number, restart the system or call in for repair.
Error11criticalCall your installer
Manual (PDF)
Software version inconsistent
Likely cause
Mismatch of software versions
What to do
Call installation for repair.
Error13critical
Manual (PDF)
MOS over temperature
Likely cause
Temperature exceeds operational limits
What to do
Power off the battery and turn on the battery after 30-40 minutes.
100005warning
Manual (PDF)
BUS OVP1
Likely cause
Voltage on the bus is too high.
What to do
If it happens occasionally, no action is required. If it persists, please contact customer service.
100007warningCall your installer
Manual (PDF)
Insulation fault
Likely cause
Possible wet installation environment or rainy weather causing alarms.
What to do
Confirm the installation environment and improve if necessary; check individual solar panel strings if alarm occurs frequently.
100008warningCall your installer
Manual (PDF)
GFCI fault
Likely cause
Ground Fault Circuit Interrupt failure due to potential insulation faults.
What to do
Check insulation conditions; if frequently paired with other alarms, contact customer service.
100010warningCall your installer
Manual (PDF)
Grid relay fault
Likely cause
An intermittent issue with the power grid.
What to do
If it occurs occasionally, no action is required. If frequent, check grid voltage high alarm guidance.
100012warning
Manual (PDF)
PV Reverse
Likely cause
Cables of PV strings are incorrectly connected.
What to do
Check the connections of the PV strings and reconnect if necessary.
100025warningCall your installer
Manual (PDF)
BAT OVP
Likely cause
Battery voltage is over the allowable range.
What to do
Check battery voltage and wiring; ensure BMS communication is normal.
100026warningCall your installer
Manual (PDF)
BAT UVP
Likely cause
Battery voltage under the allowable range.
What to do
Check if the battery breaker and inverter breaker are closed; check for BMS alarms.
100027warningCall your installer
Manual (PDF)
Battery lose
Likely cause
Faulty connection or communication issues with the battery.
What to do
Check battery wiring and DC switch status.
100030warning
Manual (PDF)
BAT1 discharge OCP
Likely cause
Over-discharge of the battery.
What to do
Reduce backup load, restart the inverter or allow auto-reset after 5 minutes.
100038warningCall your installer
Manual (PDF)
Output DC over current
Likely cause
Short-term grid issue causing high output current.
What to do
If it occurs occasionally, no action required; if persistent, contact customer service.
100041warningCall your installer
Manual (PDF)
Output DC over voltage
Likely cause
High voltage detected in the output.
What to do
If it occurs occasionally, no action is required; if persistent, contact customer service.
100059warningCall your installer
Manual (PDF)
Grid waveform abnormal alarm
Likely cause
Abnormality in grid conditions.
What to do
If it occurs frequently, contact local power operator.; if persistent, contact customer service.
Error06warning
Manual (PDF)
Circuit Breaker Open
Likely cause
The circuit breaker has tripped or has been opened
What to do
Close circuit breaker after shutting down the battery system.
Error07warning
Manual (PDF)
DIP difference
Likely cause
Inconsistent settings on DIP switches
What to do
Keep consistency of DIP switches, restart the system.
Error08warning
Manual (PDF)
LMU Disconnect(slave)
Likely cause
Communication cable issue
What to do
Reconnect the communication cable.
Error10warning
Manual (PDF)
LMU Disconnect(master)
Likely cause
Communication cable issue
What to do
Reconnect the communication cable.
Error12warning
Manual (PDF)
Multi master
Likely cause
Multiple devices are attempting to be masters
What to do
Restart all batteries.
100046info
Manual (PDF)
DC Input Disturbance
Likely cause
Occasional electrical disturbances during operation.
What to do
If it happens occasionally, no action is required; if persistent, contact customer service.

What it costs in Perth

$18,000

Typical installed price, before rebates

WA Battery Scheme: −$1,300
Federal STCs: −$4,748
You’d pay about: $11,952

Explore your options

Which size band is your home?

Usable capacity, for one battery system

Smaller home: 10–15 kWh
Medium home: 20–30 kWh
Big home: 30–40 kWh
Very big home: 40+ kWh

This battery is one unit in the medium home band. The WA rebate caps at 10 kWh, but that is a rebate limit, not a sizing guide.

Does waiting change the rebate?

Estimated federal rebate (STCs) for this 20 kWh battery

How it compares

The Alpha ESS SMILE-M-BAT-5P IV against the closest-sized batteries from other brands.

Specification	Alpha ESS SMILE-M-BAT-5P IVAlpha ESS	Ambrion AS3-10K-T-W-P4-AUSAmbrion	Ambrion AS3-12K-T-W-P4-AUSAmbrion

Usable capacity?	20 kWh	20 kWh	20 kWh
Continuous power?	5 kW	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	97%best value	92%	92%
Warranty	10 years	Not verified	Not verified
Chemistry	LFP	LFP	LFP

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