EO Mini Pro 3 vs Wallbox Quasar 2

> V2G boundary: A “V2G-ready” label or ISO 15118 support does not by itself provide bidirectional power conversion, export approval or a live energy service. Confirm the compatible car, genuinely bidirectional hardware, certified complete system, installer, service and network approval before assigning value to the claim. Read the UK V2G explainer.

A £5,577 gap — and a category boundary

The EO Mini Pro 3 costs £523. The Wallbox Quasar 2 costs £6,100. The difference — £5,577 — is not a premium for better charging. It is the price of a different technology entirely.

• EO Mini Pro 3 — a small, straightforward 7.2kW AC charger. It puts electricity into your car. £523, installed for roughly £900–£1,100 all in.
• Wallbox Quasar 2 — a 12.8kW bidirectional DC unit that charges your car and sends power back to your house or the grid. £6,100 before installation, which adds another £1,500–£3,000. Not yet available to order in the UK.

If you are choosing between these two, you already know which category you belong to. The editorial job here is to be honest about what each one does and does not deliver — and whether the Quasar 2's promise is worth acting on today.

What the EO Mini Pro 3 does well — and where it stops

The EO's selling point is physical: 215 × 140 × 100 mm, roughly the footprint of a hardback novel, weighing 2.5 kg. If a narrow garage wall or a recessed alcove rules out standard-sized units, the EO is often the only mainstream charger that fits. It includes a CT clamp for basic solar diversion, connects via Wi-Fi, Bluetooth, or Ethernet, and schedules charging around two-rate tariffs like Octopus Go or EDF GoElectric.

The caveats are real. At 7.2kW it is fractionally slower than the 7.4kW standard. EO is migrating users from its own app to ev.energy — a platform shift mid-ownership that deserves scrutiny. The three-year warranty is average. And at £523, it sits in a crowded band: the Tesla Wall Connector costs £475 and offers a longer cable, while the Wallbox Pulsar Max at £513 matches the compact form factor at 7.4kW. The EO earns its place on size and, for British Gas customers, the Hive Power+ 25% cashback — a structural discount tied to the British Gas EV Power tariff. Outside those two use cases, the field is tight. Our EO Mini Pro 3 vs Wallbox Pulsar Max comparison covers that particular contest in detail.

What the Quasar 2 promises — and what it cannot deliver yet

The Quasar 2 is the most ambitious home charger on a UK product page. Bidirectional DC at up to 12.8kW means it can charge a compatible car overnight on cheap-rate electricity, then discharge that stored energy back into the house during peak hours — or export it to the grid for revenue on a V2G tariff. In theory, your car becomes a 60–100 kWh home battery, dwarfing any wall-mounted storage unit.

The practical obstacles, as of April 2026, are substantial. The Quasar 2 is on pre-registration in the UK — not open order. Installation requires a DNO G99 application with a 30–60 working-day lead time and possibly a G100 export cap. The list of bidirectional-compatible cars is short; the Kia EV9 is the headline name, with more manufacturers expected but not confirmed. Fewer installers are qualified for bidirectional DC work. The £500 OZEV grant does not apply. And the three-year warranty — identical to what the £523 EO offers — feels thin for a £6,100 unit that sits at the frontier of home energy infrastructure.

The maths can work. A household exporting 10 kWh daily at peak rates, buying it back at 8p/kWh on Octopus Intelligent Go, might save £500–£800 a year. Even at that rate, the Quasar 2's installed cost of £7,600 or more takes a decade to recoup — and that assumes the hardware, the tariff, and the car all cooperate for the duration. For buyers who want V2G readiness without the bidirectional price tag, the Indra Smart PRO at £395 or the Zaptec Go 2 at £638 hold the position at a fraction of the outlay, waiting for the grid and the cars to catch up.

The verdict

Buy the EO Mini Pro 3 if:

• Your wall space is tight and standard-sized chargers physically do not fit
• You are on British Gas and can claim the Hive Power+ 25% cashback
• You want a working charger installed this month, not a pre-registration queue

Buy the Wallbox Quasar 2 if:

• You own (or have ordered) a CCS2 car confirmed for bidirectional DC — today, not theoretically
• You have a V2G export tariff or firm plans for one, and the patience for G99 approval
• You treat the £6,100 as infrastructure investment, not a charger purchase, and accept the payback horizon

For the vast majority of UK EV owners, the EO Mini Pro 3 — or, frankly, any competent AC charger in the £400–£650 band — is the sensible buy. The Quasar 2 is a glimpse of where home energy is heading, but it is not yet a product most households can use. The technology is ahead of the ecosystem. When the cars, the tariffs, and the installer base catch up, the calculus changes. Until then, plug in with AC, charge on a smart tariff, and let the early adopters stress-test the future.