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Home battery · Growatt · APX S2 series · CEC approved November 2023

Growatt APX 5.0P-S2

A 5 kWh home battery with backup power.

Installed in Perth, after rebates: ~$3,443Estimate: your own quote will vary
WA Battery Scheme rebate: Depends on your inverterThe scheme needs a Synergy-approved inverter; we don't know yours
Usable capacity: 5kWhBelow the smaller-home band
Warranty: 10yrs

APX 5.0P-S2: the short answer

In the APX S2 seriesOne of 12 sizes, from 4.5 to 30 kWh: 5kWhOne of 12 sizes, from 4.5 to 30 kWh
WA Battery SchemeThe scheme needs a Synergy-approved inverter; we don't know yours: Check eligibilityThe scheme needs a Synergy-approved inverter; we don't know yours
Continuous powerRuns the essentials, not the whole house: 2.5kWRuns the essentials, not the whole house

Other sizes in the APX S2 series

What we can tell you

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

5 kWh is below the smaller-home band: this is one module of a larger stack.
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: 5kWh; How much energy it stores for you to use
Continuous power: 2.5kW; How much it can run at once: the essentials, not the whole house
Round-trip efficiency: 100%; How much of the energy you store comes back out
Depth of discharge: 90%; How much of the battery you can actually use
Warranty: 10yr; 100% of capacity guaranteed at the end of it
Battery chemistry: LFP; Lithium iron phosphate, the long-cycle-life type

Warranty and support

This warranty covers defects for 10 years. Important exclusions include non-accredited installation. To claim, contact support.

Product: 10 years; not transferable; full replacement
At year 10: At least 100% of capacity
Throughput: Not on record
Installation: Must be installed by an SAA-accredited installer
Support: Australian officeGrowatt Australia; 12 years in the Australian market. Direct manufacturer warranty. Australian consumer law applies.
Perth heat: Rated to 50°C, which covers Perth's hottest days.

Warranty document Datasheet Compare warranties

WA Battery Scheme eligibility

Check eligibility

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: Inverter must be CSIP-AUS compliant under the current WA framework.
Synergy SSL approved inverter: Needs pairing with a Synergy SSL approved inverter.
VPP activation ready: VPP activation requires a Synergy SSL approved inverter.
WA Battery Scheme rebate: Requires Battery Rewards participation under the current WA framework.
Synergy Battery Rewards: Requires a CSIP-AUS compliant system and reliable internet.
Interest-free loan: Not eligible for interest-free financing.

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

Full datasheet

Every figure on file for the Growatt APX S2, by section.

Cell & chemistry

Chemistry: LFP
Cell type: null

Capacity & power

Nominal capacity: 5 kWh
Usable capacity: 5 kWh
Continuous power: 2.5 kW
Peak power: 4 kW
Depth of discharge: 90%
Round-trip efficiency: 100%
Nominal voltage: 385 V

Lifespan & degradation

Capacity retained at year 10: 100%
Warranted throughput: 0 MWh

Modularity & stacking

Modular / stackable: Yes
Maximum stack: 30 kWh

Backup & grid services

Backup capable: Yes
VPP ready: No

Physical

Dimensions (H×W×D): 660 × 690 × 185 mm
Weight: 72 kg
IP rating: IP64

Operating environment

Operating temperature: -10°C to 50°C

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

Fault & error codes — Growatt APX S2

Extracted from the installation manual

9 documented

Showing 9 of 9. The official install manual is the authoritative source — always confirm before acting.

ALMcriticalCall your installer
Manual (PDF)
To Battery Module Communication failure
Likely cause
Communication loss between the Power Module and the Battery Module
What to do
Check whether the communication cable between the Power Module and the Battery Module is securely connected.
BUScriticalCall your installer
Manual (PDF)
Short-circuit
Likely cause
Power cable is short-circuited
What to do
Check if the positive and negative terminals are reversely connected.
Chip fault protectioncriticalCall your installer
Manual (PDF)
Communication loss between two MCUs
Likely cause
Internal communication failure
What to do
There is a safety risk; stop using the battery and contact the installer.
Discharge under voltage protectioncriticalCall your installer
Manual (PDF)
Single cell voltage is below the threshold for under-voltage protection
Likely cause
Over-discharging of the battery
What to do
Stop discharging the battery; recharge the battery after rectification.
High temperature protectioncritical
Manual (PDF)
The temperature exceeds the BMS protection value
Likely cause
Overheating of the battery system
What to do
Stop using the battery immediately. Wait until the battery cools down.
Power cable connection failurecriticalCall your installer
Manual (PDF)
Power cable disconnected
Likely cause
The power cable is disconnected to the inverter
What to do
Check whether the power cable between the Power Module and PCS is securely connected and ensure the switch is ON.
Voltage sampling anomaly protectioncriticalCall your installer
Manual (PDF)
BMS Voltage sampling failure
Likely cause
Voltage measurement error
What to do
There is a safety risk; stop using the battery and contact the installer.
Charge over voltage protectionwarning
Manual (PDF)
Single cell voltage exceeds the threshold for over-voltage protection
Likely cause
Overcharging of the battery
What to do
Stop charging the battery and wait for the alarm to disappear.
Low temperature protectionwarning
Manual (PDF)
The temperature is below the protection value
Likely cause
Under-cooling of the battery system
What to do
No immediate action required; wait for the temperature to rise.

About Growatt

Years in the Australian market: 12+ (CEC-approved products since 2014)
Local support: Not verified
CEC-listed products: 50 models

View full profile →

What it costs in Perth

$4,800

Typical installed price, before rebates

WA Battery Scheme: Depends on your inverter
Federal STCs: −$1,357
You’d pay about: $3,443

The WA Battery Scheme (up to $1,300) needs a Synergy-approved inverter and VPP enrolment. We don't know which inverter you'd pair this with, so it isn't deducted above. Ask your installer. 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 to 15 kWh
Medium home: 20 to 30 kWh
Big home: 30 to 40 kWh
Very big home: 40+ kWh

This battery is below the smaller-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 5 kWh battery

How it compares

The Growatt APX 5.0P-S2 against the closest-sized batteries from other brands.

Specification	Growatt APX 5.0P-S2Growatt	Alpha ESS SMILE-M-BAT-5PAlpha ESS	Anker X1-B5-HAnker

Usable capacity?	5 kWh	5 kWh	5 kWh
Continuous power?	2.5 kW	Not verified	Not verified
Peak power?	4 kW	Not verified	Not verified

Round-trip efficiency?	100%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 Growatt

Other CEC-approved products from Growatt available in Australia.

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3 kW

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4 kW

Growatt SPH5000

5 kW

Growatt SPH6000

6 kW

MAX 100KTL3-X LV

100 kW

MAX 110KTL3-X LV

110 kW

View all Growatt inverters

View full Growatt 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.

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