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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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CEC approved: Mar 2023Report outdated info

KOYOE KY-51V105AH-S

NA series

CEC Approved

Usable capacity: 4.84 kWh
Warranty: 10 yr
Chemistry: LFP

About KOYOE

Years in AU Market3+ years

Local SupportNot verified

CEC-Listed Products6 models

3yr AU

CEC-approved products since 2023

3 years in the Australian market

Warranty and support

Warranty terms and Australian support structure.

This warranty covers the repair or replacement of defective solar products for 10 years. It excludes damages from improper installation or environmental conditions.

Duration

years

Throughput

Max Temp

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 climate suitability

Suitable with precautions

Rated to 45°C. Plan for a shaded or garage install through Perth summers.

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: -10°C to 45°C

✗ Non-transferableFull replacement

Warranty Document Datasheet Compare Warranties

Full specifications

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.

Capacity & power

Nominal capacity: 5.38 kWh
Usable capacity: 4.84 kWh

Physical

IP rating: IP65

Operating environment

Operating temperature: -25°C to 60°C

Documents

Download Datasheet Warranty Terms Installation Guide

Fault & error codes — KOYOE NA

Extracted from the installation manual

13 documented

Showing 13 of 13. The official install manual is the authoritative source — always confirm before acting.

Battery Over Temperature FaultcriticalCall your installer
Manual (PDF)
Battery temperature exceeds safe limits.
Likely cause
Battery placed in a high temperature area.
What to do
Allow battery to cool and check placement.
Battery Voltage Low FaultcriticalCall your installer
Manual (PDF)
Battery voltage is too low.
Likely cause
Incorrect battery connections or battery issues.
What to do
Check battery connections and health; restart the inverter if needed.
Bus Voltage HighcriticalCall your installer
Manual (PDF)
High bus voltage detected in the inverter.
Likely cause
PV input voltage exceeds 550V.
What to do
Check PV input voltage and reduce it if necessary.
GFCI FaultcriticalCall your installer
Manual (PDF)
Ground Fault Circuit Interrupter fault detected.
Likely cause
Grounding current is too high, or AC side circuit issues.
What to do
Remove PV panel and check peripheral AC system.
Inverter Module Over Temperature FaultcriticalCall your installer
Manual (PDF)
Inverter module has overheated.
Likely cause
Blocked heat sinks or high ambient temperature.
What to do
Ensure proper ventilation and cooling; allow cooling down.
Isolation FaultcriticalCall your installer
Manual (PDF)
Isolation issue detected in the inverter.
Likely cause
Inverter not effectively grounded, or low insulation between poles.
What to do
Check grounding and insulation levels.
Off Grid Over Voltage FaultcriticalCall your installer
Manual (PDF)
High output voltage detected in off-grid mode.
Likely cause
Incorrect off-grid port connection or load issue.
What to do
Check off-grid port and load functionality.
PV Overvoltage FaultcriticalCall your installer
Manual (PDF)
Photovoltaic input voltage exceeds the limit.
Likely cause
PV input voltage is above 550V.
What to do
Check the PV input voltage and reduce if necessary.
BMS Communication FaultwarningCall your installer
Manual (PDF)
Battery Management System communication error.
Likely cause
Failed communication between battery pack and inverter.
What to do
Check communication cable and restart inverter if needed.
Grid Frequency FaultwarningCall your installer
Manual (PDF)
Grid frequency is out of acceptable limits.
Likely cause
Frequency levels too high or too low.
What to do
Wait for grid frequency to stabilize before restarting.
Grid Voltage FaultwarningCall your installer
Manual (PDF)
Grid voltage is outside the acceptable range.
Likely cause
Voltage levels too high or too low.
What to do
Wait for grid voltage to normalize before restarting the inverter.
Low Ambient Temperature Warnwarning
Manual (PDF)
Ambient temperature is too low.
Likely cause
Surrounding temperature is lower than acceptable.
What to do
Wait for the ambient temperature to rise before restarting the inverter.
SPI Communication FaultwarningCall your installer
Manual (PDF)
Error in master-slave DSP communication.
Likely cause
Communication failure in DSP systems.
What to do
Restart the inverter; contact customer service if issues persist.

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

Perth pricing

Typical installed price

$4,356

WA State RebateSubject to eligibility

Federal STCs-$0

After Rebates~$4,356

Prices are estimates. Final pricing depends on installation requirements. STC value is based on the current certificate price of about $39.9.

The WA Battery Scheme rebate (up to $1,300) requires a Synergy-approved (SSL) inverter and VPP enrolment — not all systems qualify, so it is not included above. Confirm eligibility with your installer.

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How it compares

The KOYOE KY-51V105AH-S against the closest-sized batteries from other brands.

Specification	KOYOE KY-51V105AH-SKOYOE	SolarEdge BAT-05K48SolarEdge	Sunvolt SV-LV ESS G3 5.4-1(5.37kWh) (AS4777-2 2020)Sunvolt

Usable capacity?	4.84 kWh	4.85 kWhbest value	4.83 kWh
Continuous power?	Not verified	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	92%	92%	92%
Warranty	10 years	10 years	10 years
Chemistry	LFP	LFP	LFP

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

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