Indra Smart PRO vs Cord Zero: what the extra £44 buys

The £44 that buys you a longer cable and a CT clamp

Two British-designed 7.4kW chargers, £44 apart, both with a three-year warranty and dynamic load balancing. The Cord Zero is £555 and leans on connectivity — Wi-Fi plus a built-in 4G SIM. The Indra Smart PRO is £599 and leans on hardware — a 6-metre cable and a CT clamp in the box for solar.

The shortest version:

• Cord Zero — the charger that stays online when your router doesn't, with the fullest safety suite here.
• Indra Smart PRO — the charger that arrives with the cable length and solar clamp others charge extra for.

What the £44 actually buys

Strip the marketing back and the hardware gap is narrow. Both chargers are 7.4kW single-phase. Both include a surge protection device. Both include dynamic load balancing, RFID access and OZEV approval. Both carry IP54. Both weigh about 5kg.

Where the Indra Smart PRO pulls ahead on paper is cable and solar. Six metres of tethered lead against the Cord's standard five, and a CT clamp bundled in rather than sold separately — usually a £50–£100 line item. If your parking spot sits awkwardly from the consumer unit, or you already have panels on the roof, the £44 looks like sensible money.

Where the Cord Zero pulls ahead is everything else about the install experience. The 4G failover is not a gimmick; if your garage Wi-Fi is patchy — and it usually is — a charger that loses its tariff schedule because the router rebooted is a charger that costs you money. The Cord's multi-network SIM means the scheduling logic for Octopus Intelligent Go or OVO Charge Anytime keeps running regardless. Cord also ships with a promotional five-year warranty extension at the time of writing, which, if it's still running when you buy, is the single biggest argument in its favour.

Tariff behaviour, side by side

Both chargers do scheduled charging for the usual suspects — Octopus Go, Intelligent Go, OVO Charge Anytime, British Gas Electric Drivers, EDF GoElectric. Neither has the half-hourly tariff-chasing polish of the Ohme Home Pro, and it shows in the apps. The Ohme and Tesla apps feel a generation ahead of both the Cord AI app and the Indra app; if app polish is high on the list, the £20 saved by picking the Ohme over the Cord, or the £64 saved over the Indra, is better money.

For Intelligent Go households specifically, neither charger has a real edge — the tariff does the optimisation at the supplier end. The decision there comes down to cable length and connectivity, which is where this comparison lives.

Solar, in plain terms

The Indra ships with a CT clamp. The Cord Zero claims solar compatibility but its surplus-tracking is basic next to a proper diversion charger. If solar is a primary reason to buy, neither of these is the right answer — the Zappi GLO handles surplus-only charging with a depth neither of these attempts, and the Zappi vs Indra comparison is the one to read instead.

For a household where solar is a secondary consideration — a few panels, some summer sun, not the whole buying case — the Indra's included clamp pushes the decision its way.

Which to buy

Buy the Indra Smart PRO if:

• Your parking spot needs the extra metre of cable
• You have solar and want a clamp included, not sold separately
• Your installer quotes an SPD as an extra line item

Buy the Cord Zero if:

• Your home Wi-Fi is patchy where the charger will live
• The promotional five-year warranty is still running when you order
• You want the lowest sticker price of the two by £44

If a wall had to be chosen without knowing the house, it's the Cord Zero. The 4G failover is the kind of quiet feature you only appreciate when the alternative fails, and the safety suite covers the same install-labour ground the Indra's SPD does, for £44 less. The Indra Smart PRO wins on a specific brief — long cable, CT clamp, British manufacturing — and loses on a general one.

Buyers drawn to the Indra's broader appeal should read the Ohme Home Pro vs Indra piece; the Ohme's tariff automation is the more meaningful upgrade over either charger here.