Humax MX7 Home EV Charger 2026 Review

Last updated on December 30th, 2025 at 10:42 am

As the first wave of mass-market electric vehicles matures, many early adopters might find their original home chargers, installed three or more years ago, are beginning to feel dated or have even stopped working. Technology has moved on at a pace, and so have safety standards. For anyone considering an upgrade or a new installation, the Humax MX7 presents an attractive, intelligent, and notably future-proofed upgrade proposition.

Installation: Meeting Modern Standards

Upgrading an older charger isn't always a simple case of ‘out with the old, in with the new'. Modern regulations and the features of a truly smart charger, like the MX7, mean the installation can be more involved.

In our case, the original high-standard installation from three years prior, performed by Octopus Energy, still required a full replacement of the cabling. This wasn't due to poor quality but because the old wiring lacked the necessary data cable (a Cat 6 Ethernet cable) that the Humax MX7 needs for its advanced load-balancing and solar integration features.

The installation, carried out by Humax's preferred partner ChargedEV, highlighted several key checks required by current regulations. This includes ensuring correct water and gas earth wiring bonding is in place and accessible. A modern consumer unit for the charger, complete with surge protection, is also now standard practice – something that wasn't a mandatory requirement just a few years ago.

Before the engineer was booked in, ChargedEV led us through an onboarding process that involved collecting as much information about the install location as possible. This can be a bit laborious but ensures that you get an accurate estimate for cost and what might be involved. If you can send pictures of earth gas and water bonding, for example, this stage won't be required during installation.

Design and Features

Physically, the Humax MX7 is a sleek and attractive 7kW AC charging unit. While perhaps not at the artisan level of an Andersen, it's a smart-looking box that won't look out of place on any wall. Both tethered and untethered versions are available. There are interchangeable plates for the bottom third of the charger, so you can change the look to suit your house, although only the black option is currently included in the box.

With the tethered version we had installed, the MX7 features a robust clipping system for the charging plug and, as praised by the installer, a cleverly designed hinged faceplate that makes access for installation and maintenance incredibly easy. In contrast, the installer had to break the housing of the existing charger to get it off the wall.

The charger comes with two RFID tags, which are useful for allowing unregistered vehicles (like a visitor's) to charge, or for cars that the system doesn't automatically recognise. This brings us to the most unique aspect of the MX7 – its software interface.

The App and Smart Charging

Once the charger is physically installed and commissioned on your home Wi-Fi, the end-user app unlocks its smart capabilities.

Security and Access: When you plug in a recognised EV for the first time, the charger prompts you to enrol it. This is a welcome security feature, ensuring that nobody can simply plug in and steal your electricity. Not all cars are recognised. We found the reviewer's Tesla could be registered, but an older Mercedes plug-in hybrid couldn't. In the latter case, you will either need to allow the car to charge each time it's plugged in, or the driver can tap one of the RFID tags onto the MX7 to enable charging.

Charging Modes: The app provides three core charging modes:

1. Instant Mode: This is the simplest option – plug in and charging begins immediately. For now, this is also the mode required for smart tariffs like Octopus Intelligent Go, where the car is controlled by the energy provider's schedule. The MX7 sits in a waiting state until charging is triggered by the car (taking its lead from the energy provider).
2. Scheduled Charging: This is the perfect option for those on a fixed-period, off-peak tariff. You can simply set the charger to operate only during these cheap-rate windows (e.g., 11:30 pm to 5:30 am).
3. Intelligent Mode: This allows you to set a target state of charge by a specific time (e.g., “charge to 80% by 7:00 am”), and the MX7 will manage the charging session to hit that goal. This option will use as much of a cheap tariff period as possible, but will also charge outside that if required to meet the required charge level.

Load Balancing & Solar: The MX7's use of a CT clamp to monitor your home's total energy usage is a key feature. If the house starts drawing too much power (e.g., kettle, oven, and shower all at once), the charger will automatically dial down its output to prevent you from blowing your main fuse.

For homes with solar panels, an optional second CT clamp can be installed near the inverter. This unlocks the “Auto Solar” mode, allowing the charger to automatically use surplus solar energy to charge your car for free.

The Ace Up Its Sleeve: Future-Proofing

Where the Humax MX7 truly stands out is in its readiness for the future.

Humax is already working with Octopus to certify the MX7 for direct integration with Intelligent Go. Once complete, this will allow Octopus to control the charger directly rather than the car. This is a huge benefit for owners of EVs that are not (or not yet) compatible with the tariff themselves, opening up smart charging to a much wider audience.

Even more significantly, the Humax MX7 is Vehicle-to-Grid (V2G) ready, supporting the necessary ISO 15118 protocol. While V2G tariffs and compatible cars are scarce in the UK right now, with just Octopus's offering in partnership with BYD currently available, this feature means the charger is prepared for the next leap in home energy. V2G will effectively turn your car into a giant home battery, allowing you to store cheap off-peak or solar energy to power your home later, or even sell it back to the grid.

Price and Conclusion

The Humax MX7 is very reasonably priced, starting at £649 for the untethered version. The tethered model with a 7.5-metre cable that we reviewed comes in at £699, with a 5-metre option priced at £669.

Installation costs are separate, but new installations can benefit from the OZEV grant to reduce the price.

Considering its comprehensive smart features, solar integration, and – most importantly – its readiness for V2G and enhanced smart tariffs, the Humax MX7 is an excellent choice. It's an attractive, keenly priced charger that not only serves all the needs of today but is fully prepared for the integrated home energy ecosystem of tomorrow.