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Home battery · Alpha ESS · CEC approved July 2025

Alpha ESS SMILE-M-BAT-13.9P IV

A 55.99 kWh home battery with backup power — very big home size, the 40+ kWh band.

Installed in Perth, after rebates: ~$42,148; Typical estimate — your own quote will vary
WA Battery Scheme rebate: −$1,300; With a Synergy-approved inverter and VPP enrolment
Usable capacity: 55.99kWh; Very big home size — the 40+ kWh band

Datasheet (PDF)See the whole SMILE-M series

What we can tell you

Read from the figures on this page — no review written yet

55.99 kWh sits in the very big home band (40+ 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: 55.99kWh
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 You can use the whole battery, not just part of it: 100%
Warranty How long the manufacturer stands behind it: 5yr
Battery chemistry Lithium iron phosphate — the long-cycle-life type: LFP

Full datasheet

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

Full datasheet, by section
Specification	Value
Cell & chemistry
Chemistry	LFP
Cell type	Modular
Capacity & power
Nominal capacity	55.99 kWh
Usable capacity	55.99 kWh
Continuous power	5 kW
Peak power	5.04 kW
Depth of discharge	100%
Round-trip efficiency	96.5%
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)	210 × 610 × 627 mm
Weight	30 kg
IP rating	IP65
Operating environment
Operating temperature	-10°C to 50°C
Installation requirements
Cable gauge	25 mm²

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 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: 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

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

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.

What it costs in Perth

$50,391

Typical installed price, before rebates

WA Battery Scheme: −$1,300
Federal STCs: −$6,943
You’d pay about: $42,148

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 very big home band. The WA rebate caps at 10 kWh, but that is a rebate limit, not a sizing guide.

The federal rebate shrinks each year

STC value for this 55.99 kWh battery

How it compares

The Alpha ESS SMILE-M-BAT-13.9P IV against the closest-sized batteries from other brands.

Specification	Alpha ESS SMILE-M-BAT-13.9P IVAlpha ESS	BSL Battery HV PACK 8BSL Battery	SkyVolt HV-62-RSkyVolt

Usable capacity?	55.99 kWh	55.99 kWh	55.99 kWh
Continuous power?	5 kW	Not verified	Not verified
Peak power?	5.04 kW	Not verified	Not verified

Round-trip efficiency?	97%best value	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.

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?

Compare quotes from SAA-accredited local installers — you choose which to act on. 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 July 2025

Alpha ESS SMILE-M-BAT-13.9P IV

A 55.99 kWh home battery with backup power — very big home size, the 40+ kWh band.

Installed in Perth, after rebates: ~$42,148; Typical estimate — your own quote will vary
WA Battery Scheme rebate: −$1,300; With a Synergy-approved inverter and VPP enrolment
Usable capacity: 55.99kWh; Very big home size — the 40+ kWh band

Datasheet (PDF)See the whole SMILE-M series

Spotted something outdated?

What we can tell you

Read from the figures on this page — no review written yet

55.99 kWh sits in the very big home band (40+ 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: 55.99kWh
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 You can use the whole battery, not just part of it: 100%
Warranty How long the manufacturer stands behind it: 5yr
Battery chemistry Lithium iron phosphate — the long-cycle-life type: LFP

Full datasheet

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

Full datasheet, by section
Specification	Value
Cell & chemistry
Chemistry	LFP
Cell type	Modular
Capacity & power
Nominal capacity	55.99 kWh
Usable capacity	55.99 kWh
Continuous power	5 kW
Peak power	5.04 kW
Depth of discharge	100%
Round-trip efficiency	96.5%
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)	210 × 610 × 627 mm
Weight	30 kg
IP rating	IP65
Operating environment
Operating temperature	-10°C to 50°C
Installation requirements
Cable gauge	25 mm²

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.

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: 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

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

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.

What it costs in Perth

$50,391

Typical installed price, before rebates

WA Battery Scheme: −$1,300
Federal STCs: −$6,943
You’d pay about: $42,148

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 very big home band. The WA rebate caps at 10 kWh, but that is a rebate limit, not a sizing guide.

The federal rebate shrinks each year

STC value for this 55.99 kWh battery

How it compares

The Alpha ESS SMILE-M-BAT-13.9P IV against the closest-sized batteries from other brands.

Specification	Alpha ESS SMILE-M-BAT-13.9P IVAlpha ESS	BSL Battery HV PACK 8BSL Battery	SkyVolt HV-62-RSkyVolt

Usable capacity?	55.99 kWh	55.99 kWh	55.99 kWh
Continuous power?	5 kW	Not verified	Not verified
Peak power?	5.04 kW	Not verified	Not verified

Round-trip efficiency?	97%best value	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.