EVEC VEC03 vs CTEK Chargestorm Connected 3: £717 apart — who needs which?

A budget box versus a car-park unit on your garage wall

The EVEC VEC03 at £369 is the cheapest OZEV-approved smart charger you can buy in the UK. The CTEK Chargestorm Connected 3 at £1,086 is engineered for three-phase commercial sites and weighs almost 24 kg. The £717 between them is not a premium for polish — it is the distance between a domestic appliance and a piece of light infrastructure.

• EVEC VEC03 — £369, single-phase 7.4kW, tethered, 5-metre cable, 3-year warranty. The cheapest route onto a compliant smart charger.
• CTEK Chargestorm Connected 3 — £1,086, three-phase 22kW native (7.4kW on single-phase), untethered, MID-approved meter, OCPP 2.0.1, 5-year warranty. Built for sites that need metering, RFID access, or 22kW throughput.

What the £717 actually buys

On a single-phase supply — which covers the overwhelming majority of UK homes — both chargers deliver the same ~7.4kW to your Tesla. The CTEK's headline 22kW is locked behind a three-phase connection that most domestic properties do not have, and getting one installed typically costs £3,000–£5,000 on top of the charger itself.

What you do get for the extra money, even on single-phase: a built-in MRCD Type B (the EVEC has Type A with DC detection — adequate for most installs, but the CTEK's is a grade above), a MID-approved energy meter with Eichrecht compliance (relevant if you need auditable billing, irrelevant if you are just charging your own car), OCPP 2.0.1 alongside 1.6-J, ISO 15118 plug-and-charge readiness, RFID authentication, IK10 impact resistance, and a 5-year warranty versus the EVEC's 3. That is a meaningful spec sheet for a workplace or landlord installation. For a private driveway, most of it is academic.

Neither charger talks to your tariff

This is the shared weakness. The EVEC VEC03 has no direct smart-tariff API — it is absent from the Octopus Intelligent Go compatible list, and there is no OVO Charge Anytime hook. You can set a manual schedule via the EVEC app to catch a fixed off-peak window on Octopus Go (8.5p/kWh, 00:30–05:30), but the app's reliability is the most common customer complaint — scheduled sessions have been reported as intermittent.

The CTEK is in the same position. Scheduling happens through a third-party OCPP back-end like Monta, not a first-party app with tariff awareness. Neither charger will chase half-hourly rates on Octopus Agile. If automated tariff optimisation matters to you, neither of these is the right charger. The Ohme Home Pro at £535 does that job properly — and still costs £551 less than the CTEK.

The EVEC's real competition is not the CTEK

At this price, the VEC03's natural rivals are the Sync Energy Wall Charger 2 at £362, the Easee One at £405, and the VCHRGD Seven Pro at £432. All are OZEV-approved. The Easee One adds a lifetime 4G SIM — removing the EVEC's Wi-Fi dependency — for £36 more. The VCHRGD Seven Pro packs in more features per pound. If the VEC03's app lets you down, those are the doors to try next. Our cheapest EV chargers guide covers the full field.

The CTEK's natural rival, meanwhile, is the Zaptec Go 2 at £500 — also three-phase capable, OCPP-compliant, and £586 cheaper. It lacks the MID meter and ISO 15118, but for a domestic three-phase install those omissions rarely matter.

The verdict

Buy the EVEC VEC03 if:

• You have a single-phase supply, want the lowest upfront cost, and are content with manual scheduling on a fixed off-peak window.
• You qualify for the OZEV grant — the £500 covers the £369 unit price outright and chips into the install.
• You are comfortable with Wi-Fi-dependent software that may need patience; the hardware itself is sound.

Buy the CTEK Chargestorm Connected 3 if:

• You have, or are installing, a three-phase supply and want 22kW charging at home.
• You need MID-approved metering — for a shared property, a landlord setup, or future billing compliance.
• You value IK10 impact resistance and a 5-year warranty for an exposed or semi-public mounting location.

For a typical single-phase UK home with one Tesla on the drive, the EVEC VEC03 does the job at £369. The CTEK is not a better version of the same thing — it is a different category of product. Spend the £717 gap on a better tariff, a longer cable run, or a charger with proper smart-tariff integration instead.