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Home battery · Fronius · CEC approved September 2026
A 27.9 kWh home battery — medium home size, the 20–30 kWh band.
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
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
80% of capacity guaranteed at the end of it
Battery chemistry
Lithium iron phosphate — the long-cycle-life type
Every figure on file for the Fronius Reserva Pro, by section.
| Specification | Value |
|---|---|
| Cell & chemistry | |
| Chemistry | LFP |
| Lifespan & degradation | |
| Cycle life | 6000 cycles |
| Capacity retained at year 10 | 80% |
| Warranted throughput | 19.69 MWh |
| Physical | |
| IP rating | IP65 |
| Operating environment | |
| Operating temperature | -20°C to 55°C |
| Installation requirements | |
| Top clearance | 0 mm |
| Side clearance | 300 mm |
| Front clearance | 0 mm |
| AC breaker | 50 A |
| Cable gauge | 6 mm² |
| Earthing method | PE |
| DNSP pre-approval | No |
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.
Fronius offers a 10-year warranty for defects on registered products, excluding wear and tear. To claim, contact the installer or Fronius directly.
10
years
19.69
MWh
55°
celsius
Level 0
No Backup
Fronius Australia
Direct manufacturer warranty. Australian consumer law applies.
Suited to Perth climate
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
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
17 years in the Australian market
$25,110
Typical installed price, before rebates
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.
Usable capacity, for one battery system
This battery is one unit in the medium home band. The WA rebate caps at 10 kWh, but that is a rebate limit, not a sizing guide.
STC value for this 27.9 kWh battery
The Fronius Reserva Pro 28.0 against the closest-sized batteries from other brands.
| Specification | Fronius Reserva Pro 28.0Fronius | Alpha ESS SMILE-G3-BAT-9.3S IIIAlpha ESS | Each Energy L28Each Energy |
|---|---|---|---|
| Usable capacity? | 27.9 kWhbest value | 27.9 kWhbest value | 27.89 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.
Other CEC-approved products from Fronius 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.