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Home battery · FoxESS · CEC approved January 2024
An 8.64 kWh home battery.
Read from the figures on this page. No review written yet.
The numbers that matter for a home. The full datasheet is below.
Usable capacity
How much energy it stores for you to use
Continuous power
How much it can run at once — the essentials, not the whole house
Round-trip efficiency
How much of the energy you store comes back out
Depth of discharge
How much of the battery you can actually use
Warranty
How long the manufacturer stands behind it
Battery chemistry
Lithium iron phosphate — the long-cycle-life type
Every figure on file for the FoxESS ECS2900, by section.
| Specification | Value |
|---|---|
| Cell & chemistry | |
| Chemistry | LFP |
| Cell type | CM2900,CS2900 |
| Capacity & power | |
| Nominal capacity | 8.64 kWh |
| Usable capacity | 8.64 kWh |
| Continuous power | 4.32 kW |
| Peak power | 5.18 kW |
| Depth of discharge | 90% |
| Round-trip efficiency | 95% |
| Nominal voltage | 172.8 V |
| Lifespan & degradation | |
| Cycle life | 6000 cycles |
| Modularity & stacking | |
| Modular / stackable | Yes |
| Maximum stack | 20.16 kWh |
| Backup & grid services | |
| Backup capable | No |
| VPP ready | No |
| Physical | |
| Dimensions (H×W×D) | 570 × 470 × 380 mm |
| Weight | 100.3 kg |
| IP rating | IP65 |
| Operating environment | |
| Operating temperature | -10°C to 55°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.
This warranty covers defects and performance issues in Fox battery products for up to 60 months, provided the product is installed correctly and maintained. Claims can be made through the installer, but exclusions apply for improper installation and maintenance.
5
years
∞
MWh
55°
celsius
Level 0
No Backup
FoxESS Australia
Direct manufacturer warranty. Australian consumer law applies.
Rated to 55°C, which covers Perth's hottest days.
CSIP-AUS compliant
Inverter must be CSIP-AUS compliant under the current WA framework.
Synergy SSL approved inverter
Pairs with FOXESS CO LTD H3-PRO.
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
Requires a CSIP-AUS compliant system and reliable internet.
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
7 years in the Australian market
Extracted from the installation manual
Showing 30 of 30. The official install manual is the authoritative source — always confirm before acting.
AFE failed (UV/OV/UT/OT)criticalCall your installerAFE detected an unrecoverable fault.
HVB FUSE faultcriticalCall your installerHigh Voltage Bus fuse has blown.
Module FUSE faultcriticalCall your installerFuse in the battery module has blown.
Over temperature faultcriticalCall your installerBattery temperature is too high.
Over voltage faultcriticalCall your installerBattery voltage is too high.
Power failedcriticalCall your installerPower supply to the system has failed.
Short circuit ProtectioncriticalCall your installerA short circuit has been detected.
Shutdown failedcriticalCall your installerShutdown procedure did not complete successfully.
Single Cell '0V' faultcriticalCall your installerOne or more battery cells is at zero voltage.
SOH low protectioncriticalCall your installerState of Health is too low for safe operation.
Temperature high permanent failedcriticalCall your installerPermanent high temperature condition detected.
The Single voltage high permanently failedcriticalCall your installerVoltage of a single cell is too high permanently.
Under voltage faultcriticalCall your installerBattery voltage is too low.
AFE communication failedwarningCall your installerCommunication failure with the AFE system.
BMU Communication failedwarningCall your installerBattery Management Unit communication has failed.
Charge over currentwarningCall your installerBattery is being charged with too much current.
Charge over powerwarningCall your installerBattery is being charged with too much power.
Discharge over currentwarningBattery is delivering too much current.
Discharge over powerwarningBattery is exceeding power delivery capacity.
Internal total voltage sampling failedwarningCall your installerFailure in internal voltage measurements.
IVU Communication failedwarningCall your installerCommunication failure with the IVU.
Module Addressing failedwarningCall your installerFailure in battery module addressing.
Other faultwarningCall your installerAn unspecified fault has occurred.
PCS Communication failedwarningCall your installerCommunication failure with the Power Control System.
Pre-Charge failedwarningCall your installerInitial charging sequence has failed.
Relay adhesionwarningCall your installerRelay has stuck in the ON position.
Relay drive failedwarningCall your installerFailure in the relay drive mechanism.
Relay Not ClosewarningCall your installerRelay is not closing properly.
Temperature sampling failedwarningCall your installerTemperature sensors are not functioning correctly.
Under temperature faultwarningBattery temperature is too low.
$6,600
Typical installed price, before rebates
The WA Battery Scheme pays $1,123 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.
Usable capacity, for one battery system
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.
Estimated federal rebate (STCs) for this 8.64 kWh battery
The FoxESS ECS2900-H3 against the closest-sized batteries from other brands.
| Specification | FoxESS ECS2900-H3FoxESS | Energizer PS2900H-3Energizer | RCT Power Power Battery 9.6RCT Power |
|---|---|---|---|
| Usable capacity? | 8.64 kWh | 8.64 kWh | 8.64 kWh |
| Continuous power? | 4.32 kW | Not verified | Not verified |
| Peak power? | 5.18 kW | Not verified | Not verified |
| Round-trip efficiency? | 95%best value | 92% | 92% |
| Warranty | 5 years | Not verified | Not verified |
| Chemistry | LFP | LFP | LFP |
Specs from the CEC register and datasheet enrichment. Indicative — confirm exact figures with your installer.
CEC-approved inverters compatible with FOXESS batteries.
Other CEC-approved products from FOXESS available in Australia.
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 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.