Zaptec Go 2 vs Indra Smart PRO: the £99 question

The £99 question

Two chargers that don't share much of a shopping list. The Zaptec Go 2 at £500 is untethered, three-phase-capable and sold on a bet about the future. The Indra Smart PRO at £599 is tethered, single-phase, British-built and sold on what comes in the box today.

The gap is £99. Whether that's money well spent depends almost entirely on what your electrician would have charged for the bits Indra throws in.

• Zaptec Go 2 — V2G-ready hardware, MID-certified meter, free 4G, three-phase up to 22kW. Untethered.
• Indra Smart PRO — surge protector and solar CT clamp in the box, 6-metre tethered cable, single-phase 7.4kW.

What the Indra actually includes

The Smart PRO's pitch is not about features in the app. It's about the install invoice. A surge protection device typically adds £100–£150 to the quote; a CT clamp for solar diversion another £50–£100 if you want that capability. Indra bundles both. On a install that would have needed them anyway, the £599 sticker lands nearer £400 of effective unit cost.

If your electrician wasn't going to quote either — no solar panels now or planned, standard consumer unit with existing surge protection — the bundle is just bundle. You're paying £99 more than the Zaptec Go 2 for a tethered cable and a British build. Reasonable, but not the bargain the spec sheet implies.

What the Zaptec is selling

The Go 2's headline is V2G-readiness, and it's the only AC home charger in the UK with that certification. The honest caveat: as of 2026 there is no AC V2G tariff live for domestic users and no mainstream EV doing bidirectional AC charging. You are buying a hedge on a technology that may or may not arrive inside the charger's five-year warranty. If you're the kind of buyer who replaces hardware when the standards land, this doesn't matter. If you're not, it's hypothetical.

What the Zaptec does sell today is less romantic and more useful. The MID-approved meter produces legally certified readings — handy if you charge a company car and need to invoice accurately. The built-in 4G is subscription-free, so the charger keeps talking to the app even when your Wi-Fi falls over. And the three-phase capability is rare at this price — if you happen to have three-phase supply, 22kW charging for £500 is a line the Indra Smart PRO cannot match at any price because it doesn't offer it.

Tariffs: neither charger's strong suit

Both handle smart-tariff scheduling, but neither is the best in class at it. The Indra app lists Octopus Intelligent Go, Octopus Go, OVO Charge Anytime and EDF GoElectric as supported; the Zaptec relies on its own scheduler plus OCPP integrations. Both do the job. Neither does it as gracefully as the Ohme Home Pro, which is purpose-built around half-hourly tariff signals and costs £535.

For a fixed-window tariff like Octopus Go, either charger's scheduler is enough. For Octopus Agile, both will feel behind. If your tariff choice is already decisive, the Ohme is the better tool; if you're on Intelligent Go, the tariff handles the optimisation itself and the charger mostly just obeys.

Which to buy

Buy the Zaptec Go 2 if:

• You have three-phase supply and want 22kW
• The MID meter matters (company car, shared billing, landlord reimbursement)
• You want subscription-free 4G and don't mind untethered

Buy the Indra Smart PRO if:

• Your install would otherwise include a surge protector or CT clamp
• You want a tethered 6-metre cable as standard
• British manufacturing and a single quote price appeal

For most single-phase households without solar, the Zaptec Go 2 is the charger to put on the wall. It's £99 cheaper, lighter, more certifiable, and quietly future-proofed. The Indra's case is a strong one, but it's conditional — it hinges on what your electrician was going to charge you anyway. If you know that answer is "plenty", pay the £99. If you don't, keep it.