How much does a home battery cost installed in NZ?

Of the 20 batteries on this page with a published NZ price, indicative installed pricing runs from $7,500 to $20,000. Value per usable kWh ranges from about $967 to $1,600. Your exact installed cost depends on your switchboard, inverter and installer.

Do I need solar panels before I can get a battery?

No. A home battery can be added without solar, charging from cheaper off peak grid power and discharging at peak times. You get the most value pairing it with solar, but panels are not a requirement.

Tesla Powerwall vs BYD: what is the difference?

Both are LFP batteries with whole home backup options. The Powerwall 3 bundles its inverter into one unit, while BYD's Battery-Box range is modular, so you size it in steps to suit your home. Put them side by side above to see exact usable capacity, power and price.

How long do home batteries last?

Most batteries here carry a 10 year warranty, and a few (FranklinWH aPower 2, Enphase IQ Battery 5P, Qcells Q.HOME Core H5) go to 15 years. Warranties usually guarantee the battery keeps a set share of its capacity over that time. LFP batteries often outlast their warranty in normal daily use.

What is the payback period on a home battery in NZ?

There is no single number: payback depends on your power price, how much you use and whether you have solar. Our solar battery storage guide works through the payback maths for New Zealand conditions.

Can a home battery run my whole house in a blackout?

Some can, some cannot. Whole home backup needs enough continuous power (here that goes up to 12.8 kW) plus the right backup wiring. Others only run essential circuits like the fridge and lights. Check the backup capability row before assuming full coverage.

Compare solar batteries in NZ

24 solar batteries sold in NZ, with indicative prices from the manufacturer datasheets. Compare Powerwall and its alternatives side by side.24 solar batteries sold in NZ with real indicative prices, specs sourced directly from manufacturer datasheets, including the Tesla Powerwall and its main alternatives. Compare storage, backup power, warranty and value to find the right fit for your home.

Specs last verified 30 June 2026. Prices are indicative NZ estimates.

Solar batteries side by side

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Capacity & Power

Usable capacity

Continuous power

Peak power

Warranty

Approx price

Check back here once you've picked

Pick two or more solar batteries to compare

Slim entry point

Huawei

LUNA2000-5-S0

5 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 2.5 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $1,500/kWh

from $7,500

15-year warranty

Enphase

IQ Battery 5P

5 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 3.2 kW
Warranty: 15 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $1,600/kWh

from $8,000

Everyday starter

Energizer

Homepower HP-6M

5.8 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 3.6 kW
Warranty: 10 years
Power cut backup: Essential loads
Off-grid capable: No
$ per usable kWh: $1,379/kWh

from $8,000

Budget starter

SolaX

Triple Power T63

5.7 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 2.5 kW
Warranty: 10 years
Power cut backup: Essential loads
Off-grid capable: Yes
$ per usable kWh: $1,491/kWh

from $8,500

Clever newcomer

Sigenergy

SigenStor BAT 8.0

7.8 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 4 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes

from $9,124

Punchy modular

BYD

Battery-Box HVM 8.3

8.3 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 7.7 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $1,147/kWh

from $9,500

Expandable mid-sizer

AlphaESS

SMILE-G3 10.1kWh

9.6 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 5 kW
Warranty: 10 years
Power cut backup: Essential loads
Off-grid capable: Yes
$ per usable kWh: $1,146/kWh

from $11,000

Quiet achiever

Sungrow

SBR HV 9.6

9.6 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 5.8 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $1,198/kWh

from $11,500

Sensible mid-sizer

AlphaESS

SMILE-S6-HV 8.2kWh

8.4 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 3 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $1,429/kWh

from $12,000

All-in-one system

SolaX

X1-IES 10.2kWh

9.2 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 6 kW
Warranty: 10 years
Power cut backup: Essential loads
Off-grid capable: Yes
$ per usable kWh: $1,359/kWh

from $12,500

Solid all-rounder

Huawei

LUNA2000-10-S0

10 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 5 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $1,300/kWh

from $13,000

For SolarEdge homes

SolarEdge

Home Battery 10kWh

9.7 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 5 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: No
$ per usable kWh: $1,392/kWh

from $13,500

Backup specialist

FranklinWH

aPower 2

15 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 10 kW
Warranty: 15 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $967/kWh

from $14,500

German all-rounder

sonnen

sonnenBatterie Evo

10 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 5 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: No
$ per usable kWh: $1,500/kWh

from $15,000

Big storage value

Huawei

LUNA2000-15-S0

15 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 5 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $1,000/kWh

from $15,000

The proven original

Tesla

Powerwall 2

13.5 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 5 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $1,111/kWh

from $15,000

Powerhouse

BYD

Battery-Box LVS

16 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 12.8 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $1,000/kWh

from $16,000

Top-shelf warranty

Qcells

Q.HOME Core H5

13.0 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 5 kW
Warranty: 15 years
Power cut backup: Whole home
Off-grid capable: Yes
$ per usable kWh: $1,305/kWh

from $17,000

Big power, big name

Tesla

Powerwall 3

13.5 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 11.5 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: No
$ per usable kWh: $1,407/kWh

from $19,000

Big and stackable

Pylontech

Force H3X 15kWh

14.6 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 8 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes

from $20,000

Endless stacking

BYD

Battery-Box LVL 15.4

15.4 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 12.8 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes

Price on request

Off-grid muscle

Freedom Won

LiTE Home 10/8

8 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 10 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes

Price on request

Small home starter

SolaX

Triple Power T45

4.0 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 2 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes

Price on request

Small but punchy

AlphaESS

SMILE5 5.7kWh

5.5 kWh

of usable storage

Cell chemistry: Lithium-ion
Continuous power: 5 kW
Warranty: 10 years
Power cut backup: Whole home
Off-grid capable: Yes

Price on request

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Prices are indicative NZ estimates on one consistent basis (indicative installed). Specs last verified 2026-06-30.

Solar batteries in New Zealand at a glance

Across the 24 batteries in this comparison, usable capacity runs from 4.05 kWh (SolaX Triple Power T45) to 16 kWh (BYD Battery-Box LVS). Most carry a 10 year warranty, while the FranklinWH aPower 2, Enphase IQ Battery 5P, Qcells Q.HOME Core H5 back theirs for 15 years. Of the 20 batteries with a published indicative price, installed pricing ranges from $7,500 (Huawei LUNA2000-5-S0) to $20,000 (Pylontech Force H3X 15kWh). On value, the FranklinWH aPower 2 works out cheapest at about $967 per usable kWh, and the Enphase IQ Battery 5P is the dearest at about $1,600. Continuous power output spans 2 kW to 12.8 kW. 20 of the 24 use LFP (lithium iron phosphate) chemistry, which typically handles more charge cycles than the older NMC cells.

Want the full cost and payback breakdown? Read our solar battery costs and payback in NZ guide. Thinking beyond the Tesla? See the honest Powerwall alternatives comparison.

How much do solar batteries cost in NZ?

Installed prices for a home battery in New Zealand mostly sit between $7,500 and $20,000, depending on usable capacity and brand. Bigger units with whole home backup cost more, but the price per usable kWh often improves as capacity goes up. On this page the FranklinWH aPower 2 is the sharpest value at about $967 per usable kWh, while the Enphase IQ Battery 5P sits near $1,600. Prices are indicative and exclude extras like a new switchboard or backup wiring, so treat them as a starting point rather than a quote. For payback and how batteries compare with simply exporting to the grid, read our solar battery costs and payback in NZ guide.

LFP vs NMC: which battery chemistry lasts longer?

20 of the 24 batteries on this page use LFP, short for lithium iron phosphate. LFP cells handle more charge and discharge cycles than the older NMC chemistry, run cooler, and tolerate sitting at a full charge, which is part of why most warranties now sit at 10 years or more. NMC batteries pack more energy into a smaller, lighter box, so you still see them where space is tight. For a home battery that cycles roughly once a day, LFP is usually the safer long term pick.

What size solar battery do you need?

A typical New Zealand household uses somewhere around 15 to 20 kWh of electricity a day. A 5 kWh battery covers the evening peak, when power is dearest, while something in the 10 kWh range starts to carry you through a full night on stored solar. Usable capacity on this page ranges from 4.05 kWh (SolaX Triple Power T45) to 16 kWh (BYD Battery-Box LVS). Most homes with solar land in the middle: enough to shift daytime generation into the evening without paying for capacity you never cycle.

Which batteries keep the power on in a blackout?

Not every home battery gives you whole home backup. Some only run essential circuits like the fridge, lights and internet, and a few need a manual changeover. Continuous power output on this page ranges from 2 kW to 12.8 kW, which is what decides how much you can run at once during an outage. If riding out a power cut matters to you, check the backup capability and transfer type before assuming the battery will keep the whole house going.

How we verify these specs

Every figure on this page comes straight from the manufacturer's published datasheet, checked by hand. Where a brand does not publish a number, we mark it Not published rather than guess or estimate. Prices are indicative New Zealand estimates on one consistent installed basis, so the value per usable kWh comparison stays fair between brands. Specs were last verified on 30 June 2026. If you spot something out of date, tell us and we will recheck the source.

Home battery FAQs

How much does a home battery cost installed in NZ?: Of the 20 batteries on this page with a published NZ price, indicative installed pricing runs from $7,500 to $20,000. Value per usable kWh ranges from about $967 to $1,600. Your exact installed cost depends on your switchboard, inverter and installer.
Do I need solar panels before I can get a battery?: No. A home battery can be added without solar, charging from cheaper off peak grid power and discharging at peak times. You get the most value pairing it with solar, but panels are not a requirement.
Tesla Powerwall vs BYD: what is the difference?: Both are LFP batteries with whole home backup options. The Powerwall 3 bundles its inverter into one unit, while BYD's Battery-Box range is modular, so you size it in steps to suit your home. Put them side by side above to see exact usable capacity, power and price.
How long do home batteries last?: Most batteries here carry a 10 year warranty, and a few (FranklinWH aPower 2, Enphase IQ Battery 5P, Qcells Q.HOME Core H5) go to 15 years. Warranties usually guarantee the battery keeps a set share of its capacity over that time. LFP batteries often outlast their warranty in normal daily use.
What is the payback period on a home battery in NZ?: There is no single number: payback depends on your power price, how much you use and whether you have solar. Our solar battery storage guide works through the payback maths for New Zealand conditions.
Can a home battery run my whole house in a blackout?: Some can, some cannot. Whole home backup needs enough continuous power (here that goes up to 12.8 kW) plus the right backup wiring. Others only run essential circuits like the fridge and lights. Check the backup capability row before assuming full coverage.