Zaptec Go 2 vs EVEC VEC03

> 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.

£289 apart, and almost nothing in common

These two chargers occupy different ends of the market. The Zaptec Go 2 costs £638 and bets on a V2G future most UK homes cannot yet use. The EVEC VEC03 costs £349, packs its own RCD into the box, and is being quietly cleared from shelves as EVEC pushes its replacement. The £289 gap is wide enough that most buyers will already lean one way — but the detail underneath matters.

• Zaptec Go 2 — untethered, marketed as V2G-ready, MID meter, 4G built in, five-year warranty. A charger bought for the next decade.
• EVEC VEC03 — tethered, built-in protection, £349 run-out stock. A charger bought to spend as little as possible right now.

What the Zaptec's £289 buys you

Start with what you can use today. The Go 2 has a MID-approved energy meter — legally certified readings you can hand to an employer for mileage reimbursement or use to split bills in a shared property. The VEC03 has no equivalent. The Go 2 also carries subscription-free 4G, so if your Wi-Fi drops or your garage is at the far end of the garden, the charger stays online. The VEC03 relies on Wi-Fi and Bluetooth; customer complaints about its app reliability often trace back to a weak signal with no fallback.

Then there is V2G. The Go 2 is marketed as V2G-ready because it publishes ISO 15118 communication support, but Zaptec says it cannot currently be registered as a UK V2G installation. Whether that matters depends on your tolerance for waiting — V2G rollout is patchy, vehicle support is limited, and the commercial frameworks are still being written. You are paying a premium for hardware that may sit idle for years. But if V2G does arrive within the Go 2's five-year warranty window, you may still need other certified hardware or a replacement charger. The VEC03 has no path to V2G at all.

The warranty gap is plain: five years versus three. On a charger you expect to outlast your current car, two extra years of parts-and-labour cover is not trivial.

The VEC03's one structural advantage

The VEC03 ships with a Type A RCD (30 mA), 6 mA DC leakage detection, and PEN fault protection built in. Most chargers require your electrician to fit these separately in the consumer unit — typically adding around £100 to the install bill. That means the VEC03's true installed cost can be £100 lower than the headline suggests relative to chargers without onboard protection.

At £349, the VEC03 is also one of the cheapest OZEV-approved smart chargers available. For eligible renters and flat owners, the £500 OZEV grant covers the unit price outright and chips into the installation costs too. That is a compelling proposition if your priority is simply getting a compliant charger on the wall for as little cash out of pocket as possible.

The catch: this is run-out stock. EVEC has replaced the VEC03 with the vecGO 2.0, and the product page already banners the successor. Buying a discontinued model means spare-parts availability may narrow, and firmware updates are unlikely to continue indefinitely. For a charger with a three-year warranty, that timeline is tight but probably fine. Beyond three years, you are on your own.

Neither charger talks to your tariff

This is the shared weakness. The Zaptec Go 2 supports scheduled charging — set a window, and it starts and stops accordingly — but it has no direct API link to Octopus Intelligent Go, OVO Charge Anytime, or any other smart tariff. The VEC03 is in the same position, and its app scheduling has been reported as intermittent.

On a fixed off-peak tariff like Octopus Go (8.5p/kWh, 00:30–05:30), both chargers can be set manually and will do the job. On a variable tariff like Octopus Agile, neither can chase half-hourly price drops. If smart-tariff automation is important to you, the Ohme Home Pro at £539 is the charger to compare against — see the Ohme Home Pro vs Zaptec Go 2 page for that angle.

The verdict

Buy the Zaptec Go 2 if:

• You want V2G readiness and are prepared to wait for the ecosystem to catch up
• You need a MID-approved meter for expense claims or billing
• Reliable connectivity matters — 4G backup means the charger works regardless of your Wi-Fi

Buy the EVEC VEC03 if:

• Upfront cost is the deciding factor and you want a compliant smart charger for £349
• You are OZEV-eligible and want the grant to cover the unit and part of the install
• You are on a flat-rate or simple off-peak tariff and do not need tariff integration

For most buyers spending their own money on a charger they expect to last, the Zaptec Go 2 is the stronger purchase. The VEC03 is cheap, and its built-in protection is a genuine cost saver at install — but it is discontinued hardware with a shorter warranty, a weaker app, and no route to any of the features that will matter as the grid evolves. If the Go 2's £638 price is too steep but you still want longevity, the Easee One at £489 does the everyday charging job well for £149 less. The VEC03 is a fine stopgap. The Go 2 is the charger you do not replace.