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Home battery · Cesc · CEC approved January 2026

Cesc Venus HV5-01-2

A 9.54 kWh home battery.

Installed in Perth, after rebates: ~$5,446; Typical estimate — your own quote will vary
WA Battery Scheme rebate: Depends on your inverter; The scheme needs a Synergy-approved inverter — we don't know yours
Usable capacity: 9.54kWh; Below the smaller-home band

Datasheet (PDF)See the whole Venus HV5-01 series

What we can tell you

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

9.54 kWh is below the smaller-home band.
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: 9.54kWh
Round-trip efficiency How much of the energy you store comes back out: 92%
Depth of discharge How much of the battery you can actually use: 90%
Battery chemistry Lithium iron phosphate — the long-cycle-life type: LFP

Full datasheet

Every figure on file for the Cesc Venus HV5-01, by section.

Full datasheet, by section
Specification	Value
Cell & chemistry
Chemistry	LFP
Capacity & power
Nominal capacity	10.6 kWh
Usable capacity	9.54 kWh
Depth of discharge	90%
Lifespan & degradation
Cycle life	6000 cycles
Physical
IP rating	IP65
Operating environment
Operating temperature	0°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

Warranty and support

Warranty terms and Australian support structure.

This warranty covers manufacturing defects but is void if the product is misused or improperly installed. To make a claim, contact the company with proof of purchase.

Duration

—

not on record

Throughput

∞

MWh

Max Temp

50°

celsius

Max Backup

Level 0

No Backup

Australian support structure

Not verified

We have not verified this brand's Australian support structure. Confirm warranty arrangements with the manufacturer or your installer.

Perth heat

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

Key warranty terms

•Depth of Discharge: 90% usable capacity
•Round-trip Efficiency: 92% rated
•Annual Degradation: ~2.5% per year expected
•Installation: Must be installed by SAA-accredited installer
•Operating Conditions: 0°C to 50°C

✗ Non-transferableFull replacement

Warranty Document Datasheet Compare Warranties

WA Battery Scheme eligibility

Conditional

Synergy SSL inverter pairing, VPP participation and state-rebate qualification for this battery. Rebate and STC amounts are shown in the pricing panel.

This battery is AC-coupled. To get the WA rebate, the interest-free loan, VPP payments or DEBS export credits, it needs a gateway device from Synergy's approved list (for example SMA or Redback), or an inverter and battery from the same brand (Sungrow or Fronius). Without one, exports are capped at 1.5kW.

Some third-party gateways struggle to pass compliance testing, and adding anything to an AC-coupled system later means the whole system has to be re-checked. For many homes, switching to a hybrid (DC-coupled) inverter is the simpler path. AC vs DC coupling

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

About CESC

View Full Profile →

Years in AU Market0+ years

Local SupportNot verified

CEC-Listed Products10 models

AU Listed

Listed on CEC Approved Products Register

0 years in the Australian market

Fault & error codes — Cesc Venus HV5-01

Extracted from the installation manual

9 documented

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

OCcriticalCall your installer
Manual (PDF)
Over current
Likely cause
Current exceeds safe operating levels.
What to do
Please contact your dealer or technical support.
OVcriticalCall your installer
Manual (PDF)
Over voltage
Likely cause
Voltage exceeds safe operating range.
What to do
Please contact your dealer or technical support.
PCEcriticalCall your installer
Manual (PDF)
Precharge error
Likely cause
Failure during precharge sequence.
What to do
Please contact your dealer or technical support.
REcriticalCall your installer
Manual (PDF)
Relay error
Likely cause
Relay malfunctions or fails.
What to do
Please contact your dealer or technical support.
STFcriticalCall your installer
Manual (PDF)
Self-test failure
Likely cause
Failed internal self-checks.
What to do
Please contact your dealer or technical support.
UVcriticalCall your installer
Manual (PDF)
Under voltage
Likely cause
Voltage falls below safe operating range.
What to do
Please contact your dealer or technical support.
OTwarning
Manual (PDF)
Over temperature
Likely cause
Temperature exceeds safe limits.
What to do
Wait till the temperature of cell goes back to the normal state.
PCB_OTwarning
Manual (PDF)
PCB over temperature
Likely cause
Temperature of PCB exceeds safe limits.
What to do
Wait till the temperature of cell goes back to the normal state.
UTwarning
Manual (PDF)
Under temperature
Likely cause
Temperature falls below safe limits.
What to do
Wait till the temperature of cell goes back to the normal state.

What it costs in Perth

$8,000

Typical installed price, before rebates

WA Battery Scheme: Depends on your inverter
Federal STCs: −$2,554
You’d pay about: $5,446

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: 10–15 kWh
Medium home: 20–30 kWh
Big home: 30–40 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 9.54 kWh battery

How it compares

The Cesc Venus HV5-01-2 against the closest-sized batteries from other brands.

Specification	Cesc Venus HV5-01-2Cesc	Alpha ESS SMILE-B5 IIAlpha ESS	Alpha ESS SMILE-S5 IIAlpha ESS

Usable capacity?	9.54 kWh	9.576 kWhbest value	9.576 kWhbest value
Continuous power?	Not verified	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	92%	92%	92%
Warranty	Not verified	Not verified	Not verified
Chemistry	LFP	LFP	LFP

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

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.