Ratio io6 Pro | 7.4kW / 22kW Business EV Charger | MID Meter 4G
£2.00 under RRP
Ratio io6 Pro
7.4kW / 22kW Business EV Charger | MID Meter 4G
£2.00 under RRP
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✓ OZEV Grant Eligible - up to £500 off installation
7.4kW
AC Charging
Smart App
Scheduling
Type 2
Universal Fit
The Ratio io6 Pro is a wall-mounted smart EV charger available in 7.4kW single phase and 22kW three phase. Each unit includes a certified MID meter, 4G SIM, RFID access control and Open PEN fault protection as standard. The charger supports dynamic load management, with up to 32 units connectable on a shared supply. OCPP 1.6J compliant. BSI Kitemark accredited and OZEV approved.
Key Features
- Certified MID Meter - built-in accurate billing meter for tenant or fleet cost recovery
- 4G Connected - SIM included, no Wi-Fi required for full smart functionality
- Dynamic Load Management - connect up to 32 units on one supply, power shared automatically
- Solar Charging - prioritises excess solar energy via the Ratio app (requires Sense kit)
- Open PEN Fault Protection - no earth rod required on single phase installations
- RFID Access Control - restrict use to authorised users or run open plug-and-charge mode
- OCPP 1.6J Compliant - integrates with back-office management platforms
- BSI Kitemark Accredited - OZEV approved for LEVI and workplace charging grants
Specifications
| Power Output | 7.4kW (Single Phase) / 22kW (Three Phase) |
| Charging Standard | IEC 61851 Mode 3 |
| Connector | Type 2 Socket or 7.5m Tethered Cable |
| Energy Meter | Certified MID Meter |
| Connectivity | 4G SIM Included |
| Enclosure Rating | IP54 |
| Dimensions | 400 x 250 x 105mm |
| Weight | 4kg |
| Operating Temp | -25°C to +40°C |
| Certifications | UKCA, BSI Kitemark, CE |
Shipping
Orders are processed within 1 business day.
Standard shipping: 2–3 business days.
Express shipping: 1–2 business days
Returns & Warranty
We offer a 100 day money back guarantee. Items must be returned in original, unused condition. Change of mind returns accepted within 30 days. Sale items are final sale. Read our full returns policy →
Installation & Compatibility
Does this charger work with my car?
This charger uses a universal Type 2 connector, compatible with all major EVs including Tesla (with adapter), BMW, VW, Audi, Hyundai, Kia, Mercedes, Volvo, Polestar, and more.
What does installation involve?
A certified OZEV-approved electrician mounts the unit, runs a dedicated circuit from your consumer unit, and registers the charge point. Most installs take 2–4 hours. We can also quote you: Get Quote
Do I need a dedicated circuit?
Yes, a dedicated 32A circuit is required. Your electrician will confirm your consumer unit has capacity.
Can I claim the OZEV grant?
Yes. If you own your home and have an eligible EV, you can claim up to £500 off the cost of a charge point and installation. We are OZEV-approved.
Charging Time Calculator
See how long this charger takes to charge your EV. Based on 7.4kW output.
Save Charging Calculation
Want more detail? Use our advanced EV charging calculator →
Estimates based on 7.4kW AC charging with ~95% efficiency. Actual times vary by vehicle onboard charger limit, battery temperature, and state of charge.
EV Experts
Specialist EV charging advice from people who drive electric
OZEV Approved
Claim up to £350 off with the government OZEV grant - we handle the paperwork
Certified Installation
Nationwide network of OZEV-approved electricians - fully installed & compliant
3 Year Warranty
All chargers include a 3 year manufacturer warranty as standard
Related products
“Fantastic service. Installed quickly and friendly service. Everything was explained during the process. Thank you very much.”
“Absolutely delighted with the charger we had fitted yesterday. A very tidy and prompt installation and professional service.”
“Great service, after an email enquiry got back to me really fast, sent photos and measured up, date to booking was faster than every other quote I had. Came when they said, completed work in the day, all work complete, very smooth process. Highly recommend.”
“ON-EV provided me with an excellent service. They offer a range of EV chargers at various prices and the overall cost including installation was very reasonable. The installation was professional and efficient. I highly recommend using their service.”
“Really professional team. Jago project managed the whole job efficiently. I have no hesitation in recommending ON-EV, especially when the installation is a bit tricky.”
“Not a straightforward installation - Jago came out to view, discussed what was required and charger options. Quick installation. Friendly and professional electrician, made a very neat job. Highly recommend.”
Common Questions
Do I need a professional to install my EV charger?
Yes - all home EV charger installations in the UK must be carried out by an OZEV-approved electrician. It's not just best practice, it's a legal requirement under BS 7671 wiring regulations. The charger also won't be eligible for the government grant unless an approved installer fits it.
Can I claim the OZEV grant when buying through ON-EV?
Yes. The OZEV EV Chargepoint Grant gives eligible homeowners up to £350 off the cost of buying and installing a home charger. To qualify you need to use an OZEV-approved installer - the grant covers both the unit and the labour. Your installer will usually handle the application for you.
What's the difference between a tethered and untethered charger?
A tethered charger has a cable permanently attached - you just unclip and plug in. Untethered has a socket so you supply your own Type 2 cable. Most home users prefer tethered for convenience. Untethered suits you if you drive more than one EV or want a cleaner look when the car isn't plugged in.
What's the difference between a 3.6kW and 7.4kW charger?
A 7.4kW charger is roughly twice as fast - 60kWh battery takes around 8 hours on 7.4kW vs 16 on 3.6kW. Most modern EVs and UK homes can handle 7.4kW on a standard single-phase supply, so unless your car or electrical setup limits you, go for the 7.4kW. It's the more future-proof option.
Do I need planning permission for a home EV charger?
In most cases, no. Home EV chargers fall under permitted development in the UK. The exceptions are listed buildings and some flats - if your property falls into either of those, check with your local authority before ordering.
Can I use my EV charger with solar panels?
Yes, and it's a great combination. Solar-compatible chargers like the Myenergi Zappi can detect excess energy from your panels and automatically divert it to charge your car - so instead of exporting it back to the grid, you're charging for free. If you have or are planning solar, look at our solar compatible range.
