№ 26 · Bidirectional flagship — UK pre-registration · 2026 review
Wallbox
Quasar 2
Review verdict
Wallbox Quasar 2 decision summary
- Unit only
- £6,100
- VAT included
- Installed estimate
- £7,600–£9,100
- derived market estimate
- Warranty
- 3 years (Wallbox standard; UK terms unconfirmed)
- Grant position
- Not approved
- Customer and property eligibility is separate
What stands out
Main limitation
The installed range is an estimate. The source date above is separate from the editorial review date.
Wallbox's bidirectional flagship, roughly £6,100 before installation — about twelve times the price of a Tesla Wall Connector, and, on the UK Wallbox site in April 2026, still a "keep me updated" form rather than a buy button. A European list price of €7,188 has been widely reported; no UK GBP price is published at time of writing.
What you are paying for is DC, in both directions. A normal home wallbox is AC: your car's onboard charger turns mains into battery. The Quasar 2 bypasses the car's charger and talks directly to the battery pack, which is the only way current EVs can push energy back out to the house or the grid. That is vehicle-to-home, and, on a supporting tariff, vehicle-to-grid. The list of cars that will actually do this is short and moves slowly. Kia's EV9 is the headline — the bundle announced with Wallbox is US-first, limited initially to seven states. Wallbox's UK page says only that "bidirectional functionalities are only permitted with certain EV manufacturers, and more expected to enable bidirectionality with Quasar 2 in the near future". Assume, today, that very few UK buyers have a compatible car. Our V2G explainer covers why.
Best for: Kia EV9 owners on an export-capable tariff who want the first mainstream bidirectional unit, and are comfortable being early.
Installation
Fitting the Wallbox Quasar 2.
Larger and heavier than an AC wallbox: 747 × 368 × 135 mm, around 20 kg (the published 44 lb figure is for the North American variant; UK weight unconfirmed). IP55 and IK10, rated for outdoor mounting. CCS2 tethered cable, 5 metres. That is the easy part.
The hard part is export. Any V2G or V2H install that pushes more than 3.68 kW back across the meter needs G99 approval from your DNO before the work goes in, and the Quasar 2 peaks at 12.8 kW. G99 applications typically take 30–60 working days; in constrained parts of the network the DNO can cap export under G100, or refuse it. Installation has to be done by an installer familiar with bidirectional hardware — a standard AC-wallbox electrician will not, as a rule, have done one of these. Expect an installed total well above a normal wallbox, and a longer project. Our home charger install guide covers the AC baseline; this sits several rungs above it.
Specification
- Power (bidirectional)
- Up to 12.8 kW (DC)
- Connector
- CCS2, 5m tethered
- Dimensions
- 747 × 368 × 135 mm
- Weight
- ~20 kg (44 lb NA variant; UK figure unconfirmed)
- IP Rating
- IP55 / IK10
- Connectivity
- Wi-Fi, Bluetooth, 4G (optional), RFID
- App
- myWallbox
- Bidirectional Modes
- V2H, V2G, solar self-consumption
- Warranty
- 3 years (standard Wallbox; UK terms unconfirmed)
- UK Availability
- Pre-registration, April 2026
- OZEV Approved
- No
Tariff compatibility
What it costs to run.
Only consider it once a compatible live energy service is confirmed. Octopus Power Pack currently documents its own BYD Dolphin and Zaptec Pro combination; it is not evidence that a Quasar 2 can be substituted into that service. See our 2026 charging tariff guide for the wider picture. On a normal fixed-rate tariff like Octopus Go the bidirectional hardware is unused, and a £475 Tesla Wall Connector will serve you better.
Best pairing
EDF GoElectric
- Off-peak rate
- 6.99p
- Saving / year
- £546
Estimated at 10,000 miles a year against the 26.11p/kWh standard rate.
Compare every tariffPrice
What you actually pay.
The unit is currently £6,100. £1,500–£3,000 is the working installation range, putting a typical installed total at £7,600–£9,100. Approximate conversion from European list price; UK RRP unconfirmed.
Five-year total
£9,349
Charger, installation, and five years of electricity on EDF GoElectric, at 10,000 miles a year.
Against the field
How it compares.
There isn't much of a field yet. The Zaptec Go 2 is an AC charger with ISO 15118 communication support, but Zaptec says it cannot currently be registered as a UK V2G installation and requires a certified complete system. The Tesla Wall Connector has no publicly announced bidirectional path. Enphase's announced DC IQ Bidirectional EV Charger is a separate product from the IQ EV Charger 2 already reviewed here. Treat every option as a system-level project: car, bidirectional hardware, energy service, installer and network approval all have to match.
What we loved
- PlusTrue bidirectional DC: V2H backup and V2G export, not just AC charging
- PlusUp to 12.8 kW in both directions via CCS2
- PlusIP55 / IK10, rated for outdoor mounting
- PlusWorks with the Kia EV9, the headline V2H car — more manufacturers expected
- PlusThe reference product for UK V2G early adopters
What we didn't
- MinusRoughly £6,100 unit-only; installed total likely £7,600+
- MinusUK availability is pre-registration ("keep me updated") as of April 2026, not open order
- MinusBidirectional car list is short; most UK EVs can't use the feature today
- MinusNeeds DNO G99 approval for export; 30–60 working-day lead time, possible G100 cap
- MinusInstallation is materially more involved than an AC wallbox; fewer installers qualified
- Minus£500 OZEV grant doesn't apply to bidirectional DC units
- Minus3-year warranty — shorter than several AC units at a fraction of the price
After the evidence
Ask installers to price this exact charger.
The installation brief carries Wallbox Quasar 2 as your preference, together with the property and parking details needed for a useful response.
Related reading
Keep going →
Complete Guide to Home EV Charger Installation
Everything about installation — costs, timeline, and finding an installer.
How Much Does It Cost to Charge a Tesla at Home?
Detailed cost breakdown with off-peak tariffs and annual savings.
OZEV EV Charger Grant UK 2026
Who's eligible for the £500 government grant and how to claim.
Solar Panels and EV Charging UK Guide
Can you charge your Tesla for free with solar panels?
Best EV Charger for Solar Panels UK 2026
Ranked comparison of all solar-compatible chargers.
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