Cord Zero

The Cord Zero is a solid, no-nonsense smart charger that distinguishes itself with one feature that most competitors charge extra for or omit entirely: dual Wi-Fi and 4G connectivity as standard. Where the Ohme Home Pro includes 4G but no Wi-Fi, and the Indra Smart LUX charges £250 extra for 4G, the Cord Zero ships with both built in and switches automatically between them. If your Wi-Fi drops out, the charger seamlessly fails over to 4G via its built-in multi-network SIM. If 4G coverage is weak, it stays on Wi-Fi. This automatic failover means the Cord Zero is one of the most reliably connected chargers you can buy, which matters because a smart charger that loses connectivity is just an expensive dumb charger. Beyond connectivity, the Cord Zero delivers a comprehensive feature set: scheduled charging aligned to off-peak tariff windows, compatibility with major UK EV tariffs including Octopus Go, OVO, British Gas, and EDF, solar compatibility, dynamic load balancing, RFID access control, OCPP 1.6J compliance, and energy monitoring through the Cord AI app. Safety credentials are thorough: the charger includes built-in RCD protection, PEN fault detection, surge protection, and overvoltage protection as standard, which is the most comprehensive built-in safety package on this list and can significantly reduce installation costs. At £555 for the 5-metre tethered version (or approximately £665 for the 8-metre version), the Cord Zero is competitively priced for a charger with dual connectivity and this level of built-in safety. Cord also currently offers a free upgrade from the standard 3-year warranty to 5 years, though this promotional offer may not last indefinitely.

Best for: UK EV owners who want rock-solid dual-connectivity (Wi-Fi + 4G with automatic failover) and comprehensive built-in safety features, without paying a premium for either.

Installation

The Cord Zero weighs approximately 5 kg for the tethered version with 8-metre cable and measures 320mm x 210mm x 132mm, making it a mid-sized unit comparable to the Tesla Wall Connector. The IP65 rating makes it fully weatherproof for exposed outdoor mounting, and the IK10 impact resistance rating provides maximum protection against accidental knocks. The standout installation advantage is the comprehensive built-in safety suite: the Cord Zero includes an RCD, PEN fault detection, surge protection, and overvoltage protection all within the unit itself. This is unusual -- most chargers on this list require the installer to add an RCD and surge protection device at the consumer unit, which adds both cost and time. With the Cord Zero, the installer may be able to skip some of these additions (though this depends on your specific installation and your installer's assessment of the existing consumer unit). This can save £100--200 on installation costs. The charger requires a dedicated circuit from the consumer unit, and the standard 5-metre cable is adequate for most driveways. If you need more reach, the 8-metre version at approximately £665 is worth considering -- it is cheaper than repositioning the charger or running additional containment. Cord offers a fast installation turnaround, typically within two weeks of order, through their network of approved installers. For a full walkthrough of the installation process, see our complete guide to home EV charger installation.

Tariff Compatibility

The Cord Zero supports scheduled charging through the Cord AI app, with compatibility for major UK EV tariffs including Octopus Energy (Go, Intelligent Go), OVO Energy, British Gas, and EDF. You set your off-peak charging window in the app, and the charger restricts grid charging to those hours. On Octopus Go (00:30--04:30 off-peak at around 7p/kWh), this is a set-and-forget configuration that works reliably. The Cord AI app provides energy monitoring so you can track consumption and costs per session. However, like most chargers other than the Ohme, the Cord Zero does not have direct API integration with energy providers. It cannot automatically request additional off-peak slots on Octopus Intelligent Go or dynamically optimise for half-hourly pricing on Octopus Agile. For drivers on simple two-rate tariffs, this schedule-based approach is perfectly adequate and delivers significant savings over public charging. Solar compatibility is available but more limited than dedicated solar chargers like the Zappi GLO -- the Cord Zero can work alongside solar installations but does not offer the same granular surplus-only charging modes. For buyers who prioritise tariff automation above all else, the Ohme Home Pro or Ohme ePod remain the better choices. For a full comparison of which tariffs work best with which chargers, see our best EV charging tariff guide.

Price Breakdown

At £555 for the 5-metre version, the Cord Zero is priced similarly to the Ohme Home Pro (£535) and Indra Smart LUX (£565). The value proposition becomes clearer when you consider that the Cord Zero includes both Wi-Fi and 4G connectivity (the Indra charges £250 extra for 4G) and the most comprehensive built-in safety suite on this list (which can save £100--200 on installation). When you factor in these potential installation savings, the effective cost is very competitive. Cord currently offers a free upgrade from the standard 3-year warranty to 5 years, which if still available at the time of purchase, matches the longest warranties on this list. The 8-metre cable version at approximately £665 is reasonably priced for the extra reach. If you are eligible for the OZEV grant, the installed cost drops to around £455 for the 5-metre version.

How It Compares

The Cord Zero's dual-connectivity feature is its main differentiator. The only other charger on this list with built-in 4G as standard is the Ohme range (Home Pro and ePod), but the Ohme uses 4G only without Wi-Fi as a backup. The Cord Zero's automatic failover between Wi-Fi and 4G provides the most reliable connectivity of any charger here. Against the Ohme Home Pro (£535), the Cord Zero is £20 more expensive but includes Wi-Fi as well as 4G, plus comprehensive built-in safety that can reduce installation costs. The Ohme wins decisively on smart tariff integration -- its direct API link with Octopus is unmatched. Against the Tesla Wall Connector (£425), the Cord Zero is £130 more expensive but offers 4G connectivity, built-in RCD and surge protection, and RFID access control -- none of which the Tesla includes. Against the Indra Smart LUX (£565), the Cord Zero is £10 cheaper and includes 4G as standard (vs £250 extra for the Indra), though the Indra wins on slim design (78mm vs 132mm depth) and protection rating (IP67 vs IP65). The Cord Zero's main weakness is brand awareness: Cord is a smaller company with a less established installer network and fewer online reviews than the major brands. The app is functional but basic compared to the polished experiences offered by Tesla, Ohme, and Wallbox. For buyers who prioritise reliable connectivity and comprehensive safety in a competitively priced package, the Cord Zero delivers excellent value.