IQ Battery
Small modular units, stacked in increments
AC-coupled LFP unit with several embedded grid-forming microinverters instead of one central inverter.
Australia-wide
Enphase battery installers in Australia
Get matched with top solar companies in Australia — Enphase-experienced prioritised
- IQ Battery 5P units let you choose how much storage your home needs
- Unlock up to $7,000 in federal solar + battery rebates*
- Compare quotes from vetted installers, with Enphase experience where available
Enphase
What could an Enphase battery save your home?
*For eligible combined solar and battery installations before January 2027. Battery-only rebates vary with usable capacity. Your installer confirms eligibility and amount.
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✓ Free to compare, no obligation
✓ Your chosen battery, your quote request
Meet Enphase Small 5 kWh batteries with microinverters inside, added one at a time.
- Adds to solar you already have
An all-in-one AC-coupled battery, so it can join an existing solar system or go in with new panels.
Your installer should confirm how it connects to your current inverter.
- Six small inverters inside
Each battery has six built-in microinverters, and PowerMatch switches on only the ones your home needs at the time.
- Start with 5 kWh, grow later
Each unit holds 5 kWh. Start with one and add more as your needs grow, up to 70 kWh.
- 15-year warranty
IQ Batteries are covered by a 15-year limited warranty, up to 6,000 cycles.
Ask your installer to confirm they're Enphase-certified; the warranty requires it.
IP55 rated to keep working in rain and rough weather, Enphase says.
The company behind it
A California company founded in 2006, known for solar microinverters and the batteries built on them.
Founded 2006
Enphase says it was founded in California in 2006 by Raghu Belur and Martin Fornage.
Millions shipped
Enphase says it has shipped about 89.4 million microinverters, with systems in over 165 countries.
Melbourne office
Enphase's Australian office is in South Melbourne, with a 1800 technical support line.
Want an Enphase battery on your home?
Get my Enphase quotesCompare up to 3 vetted installers. Free, no obligation.
We pick them, nobody bids
Request a match with up to 3 approved installers. Current availability, campaign geography and brand suitability are checked for your enquiry.
Check the installation credentials
Ask each installer for their workmanship warranty, trading history and current brand credentials before you decide.
Rebates at quote
The federal Cheaper Home Batteries discount — roughly a quarter off installed cost — plus your state layer, applied upfront at quote.
Find Enphase installers near you.
Each state page lists its capital and regional centres, the battery rebate stack for that state, and the installers we match you with there. Not listed? Matching runs on postcode, so enter yours anyway.
- New South Wales — 13 locations
- Victoria — 8 locations
- Queensland — 11 locations
- Western Australia — 3 locations
- South Australia — 1 location
- Tasmania — 2 locations
- Northern Territory — 2 locations
- Australian Capital Territory — 1 location
Is Enphase right for your home? Fit and warranty checks
A good fit if…
- Retrofitting a battery onto existing solar of any brand without replacing the inverter — this is where Enphase genuinely wins
- Homes already running Enphase microinverters that want one ecosystem and one app
- Three-phase homes wanting true three-phase backup via the FlexPhase configuration
- Buyers who want to start small and add capacity in steps rather than commit up front
- Shaded or complex roofs where the per-panel architecture already suits the site
Consider the limitations
- You want a large system — the cost and the wall space both become hard to justify at scale
- You are optimising for payback period rather than flexibility
- You have limited wall space; each unit needs its own footprint
- You want the lowest cost per kWh available in the market
The Enphase range
IQ Battery with FlexPhase
Configured at install for single- or three-phase
Same hardware, set at installation for either single-phase or true three-phase backup — a real advantage for three-phase homes.
System controller
Required for backup
Manages islanding during an outage. Check whether it is in the quoted price.
Enphase specifications and source documents
The IQ Battery is AC-coupled, which makes it the most straightforward retrofit in this comparison: it works alongside existing solar of any brand without replacing your inverter. Each unit contains multiple grid-forming microinverters rather than one central inverter, so a single failure degrades output instead of stopping it. Units stack in small increments, and the FlexPhase configuration covers either single-phase or true three-phase backup. The trade-off is blunt — small capacity per box means wall space and cost per kWh both become limiting once you want a large system.
Enphase questions, answered
- Can I add an Enphase battery to solar that is not Enphase?
- Yes — this is the main reason to choose it. The IQ Battery is AC-coupled, so it works alongside an existing solar system of any brand without replacing your inverter. Batteries that are DC-coupled, including Fronius Reserva, SolarEdge and Sungrow, generally require their own matching inverter, which is exactly what makes those retrofits expensive.
- Is the Enphase IQ Battery worth it?
- It is the most expensive option per usable kWh in this comparison, and that is a fair criticism if you are judging on payback alone. It earns its place in three specific situations: retrofitting onto existing non-Enphase solar, three-phase homes needing genuine three-phase backup, and households that want to start small and grow. Outside those cases, other batteries do the same job for less.
- How much backup does one Enphase battery provide?
- One unit runs essentials rather than a whole house with air conditioning. Most households wanting meaningful backup install two or more — which is exactly where the cost and wall-space trade-off starts to bite. Ask your installer to model your actual evening load rather than quoting a unit count off the top of their head.
- What happens if part of an Enphase battery fails?
- It keeps running at reduced output rather than stopping. Each unit contains several grid-forming microinverters instead of one central inverter, so a single failure costs you a fraction of the unit’s power rather than the whole battery. That redundancy is the core of Enphase’s engineering argument and is genuinely different from every other battery on this list.
- How many Enphase batteries will I need?
- Plan in small increments rather than one big number: a couple of units covers a typical evening peak, more starts to look like whole-home independence. Two things follow. Each unit needs its own wall space, and the cost per kWh does not improve as you add units the way it does with a modular stack. If your target is a large system, price a stacked alternative alongside it before committing.
- Will Enphase batteries run my air conditioning?
- One unit runs a split system comfortably; ducted cooling generally needs more than one. Because capacity comes in small increments, Enphase gives you a precise way to size for that load rather than over- or under-buying — but each increment costs wall space as well as money. Ask your installer to model an actual summer evening rather than quoting a round number.
- Can Enphase batteries be installed indoors?
- Yes, and indoors is often the better choice in Australia. The units are passively cooled with no fans or moving parts, which makes them quiet enough for a garage or laundry, and the operating temperature range is narrower than some rivals, so getting them out of direct summer heat protects long-term output. Wall space is the practical constraint once you go past two units.