№ 31 · Reviewed · 2026 review
Injet
Eco Smart 7.4kW
3.4 / 5 · independently reviewed · 3 years (UK manufacturer) warranty
The £405 headline is a mirage twice over: exc. VAT, and hardware only. The real numbers are £486 for the unit and £1,320 fitted, which is Pod Point money — and the Pod Point is £999 installed. The grant checks out: INJET ECO is on the DfT's eligible model list, so renters and flat owners can claim the £500. Little else does. There is no retailer, no installer network, nobody outside Injet with anything at stake in whether the charger lasts. The hardware may well be good; the Sync Energy Wall Charger 2 matches it claim for claim at £362, from the EV arm of a UK-listed company.
Unit only
£486
Installed from
£1320
After OZEV
£820

Max Power Output
7.4kW single-phase (Injet's spec table states 7kW / 32A / 230V; the "up to 7.8kW" in its own listings is not supported by 32A × 230V)
Connector
Type 2 — untethered, or tethered 5m at the same price
Connectivity
Wi-Fi 6, dual-band 2.4GHz / 5GHz
Protocol
OCPP 1.6J; ModBus
Dimensions
310mm × 260mm × 115mm
Weight
~4.5 kg
What we loved
- PlusOn the DfT's eligible chargepoint model list as INJET ECO (iMHN-07K0-CAUK / CBUK / CCUK), updated 15 June 2026 — the £500 grant is real if you rent or own a flat
- PlusOCPP 1.6J, so the unit isn't locked to its maker's back end
- PlusTethered 5-metre version costs the same as untethered
- PlusPEN fault protection built in — usually removes the separate earth rod at install
- PlusInjet claims IP65 and IK10 (20 J) — an exposed-wall rating, where the Tesla Wall Connector's IP44 isn't
- PlusWi-Fi 6, dual-band 2.4/5GHz — a better radio than most units at this price
- PlusThree-year UK manufacturer warranty
What we didn't
- MinusThe £405 headline is exc. VAT and hardware only — £486 for the unit, £1,320 with Injet's installation
- MinusNothing independent stands behind it: no retailer stocks it, no third-party network fits it, and the only party behind the three-year warranty is the manufacturer
- MinusEvery specification, IP65 and IK10 included, is Injet's own figure, with no test behind it
- Minus£1,320 fitted is more than a Pod Point Solo 3S, which is £999 with installation included and a five-year warranty
- MinusThe Sync Energy Wall Charger 2 matches the grant, OCPP 1.6J, IP65, IK10 and PEN protection for £362 a unit
- MinusInjet's own listings advertise "up to 7.8kW"; its spec table says 7kW at 32A / 230V, and 32A at 230V cannot reach 7.8kW
- MinusNo smart-tariff API — scheduling is manual, so a variable tariff wants a different charger
Which tariff pairs best
On a cheap overnight tariff, Injet Eco Smart 7.4kW saves up to £557 a year.
Estimated against the 24.5p/kWh standard variable rate at 10,000 miles a year. Sorted by annual saving.
| Tariff | Integration | Off-peak rate | Saving / year | Details |
|---|---|---|---|---|
Octopus Agile Octopus Energy | App scheduling The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them. | 5p Variable | £557 vs 24.5p flat | Read → |
Octopus Intelligent Go Octopus Energy | App scheduling The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them. | 7p 11:30pm–5:30am | £500 vs 24.5p flat | Read → |
Scottish Power EV Saver Scottish Power | App scheduling The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them. | 7.2p 12am–5am | £494 vs 24.5p flat | Read → |
E.ON Next Drive E.ON | App scheduling The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them. | 7.5p 12am–6am | £486 vs 24.5p flat | Read → |
Octopus Go Octopus Energy | App scheduling The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them. | 8.5p 12:30am–5:30am | £457 vs 24.5p flat | Read → |
EDF GoElectric EDF Energy | App scheduling The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them. | 8.99p 12am–5am | £443 vs 24.5p flat | Read → |
British Gas Electric Drivers British Gas | App scheduling The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them. | 9p 12am–5am | £443 vs 24.5p flat | Read → |
OVO Charge Anytime OVO Energy | App scheduling The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them. | 14p Any time | £300 vs 24.5p flat | Read → |
Best saving
- Off-peak rate
- 5p
- Window
- Variable
- Integration
- App scheduling — The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them.
- Off-peak rate
- 7p
- Window
- 11:30pm–5:30am
- Integration
- App scheduling — The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them.
- Off-peak rate
- 7.2p
- Window
- 12am–5am
- Integration
- App scheduling — The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them.
- Off-peak rate
- 7.5p
- Window
- 12am–6am
- Integration
- App scheduling — The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them.
- Off-peak rate
- 8.5p
- Window
- 12:30am–5:30am
- Integration
- App scheduling — The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them.
- Off-peak rate
- 8.99p
- Window
- 12am–5am
- Integration
- App scheduling — The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them.
- Off-peak rate
- 9p
- Window
- 12am–5am
- Integration
- App scheduling — The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them.
- Off-peak rate
- 14p
- Window
- Any time
- Integration
- App scheduling — The charger's app supports scheduling to align with off-peak hours. You set the hours; the charger runs on them.
Figures are estimates. Your actual saving depends on how much charging you do in the off-peak window versus during the day, and on your provider's standing charge. Read the individual tariff reviews for the full picture.
The real cost
What Injet Eco Smart 7.4kW costs you over five years.
The up-front install, plus five years of electricity on your tariff — against public rapid charging and petrol at current rates. Adjust for your vehicle and mileage below.
Injet Eco Smart 7.4kW supports app-based scheduling to align with Octopus Agile off-peak hours. Read the Octopus Agile review →
Typical 5-year total
£2,034
£1,320 up front, then about £143 a year in electricity on Octopus Agile.
Saves about £10,571 over 5 years vs public rapid charging, £8,286 vs petrol at 18p/mile. Adjust the inputs above for your numbers.
Start with the price, because Injet states it in a way most buyers will read wrong. The shop says "Price range: £405.00 through £1,100.00 exc.VAT" — exc. VAT, on a page selling to consumers. The £405 that has followed this charger around the internet is a number nobody pays: it is the hardware, before tax, and £486 at checkout. The £1,100 is the same charger with installation added, which is £1,320. There is no third figure. Those two prices are the whole range, and the difference between them — £834 — is what Injet charges to fit it.
The caveat to settle before any of the specification below: every line of it is Injet's own. No retailer stocks this charger — not Screwfix, not Toolstation, not an EV specialist — and no third-party installer network fits it. The shop, the installation, the warranty and the datasheet are all one company, and the warranty is a promise Injet makes about a product Injet sells through Injet. Nothing independent stands behind any of it.
One claim does hold, and Injet undersells it. INJET ECO — models iMHN-07K0-CAUK, CBUK and CCUK — is on the DfT's eligible chargepoint model list, updated 15 June 2026. The £500 OZEV grant is real. It is also the renters-and-flat-owners grant: if you own the house the driveway belongs to, it is worth nothing to you, whatever list the charger appears on.
Best for: Nobody, at these prices. The case for it used to be the weather rating, and that case is gone: the Sync Energy Wall Charger 2 is on the same eligible list with the same IP65 and IK10, the same OCPP 1.6J and the same built-in PEN protection, for £362 a unit.
Installation
A 310 × 260 × 115 mm unit, around 4.5 kg, on a dedicated 32A single-phase circuit. Untethered as standard, and the tethered 5-metre version costs the same, which is worth taking — a Type 2 lead normally adds £40–60. PEN fault protection is built in, so the installer can usually skip the separate earth rod.
Injet claims IP65 and IK10: dust-tight, water-jet resistant, rated to a 20 J impact. That is a genuinely exposed-wall rating, and it is where the Tesla Wall Connector's IP44 gives up. It buys no advantage over the approved competition, though — the Sync Energy Wall Charger 2 is IP65 + IK10, the Hypervolt Home 3 Pro IP66 + IK10, the Indra Smart LUX IP67 + IK10, and the Ohme Home Pro IP65. It is also a figure with no test behind it, published by the company selling the charger.
Two things to establish before ordering. Whether the CT clamp for load management and solar is in the box or a paid extra: Injet doesn't publish it. And who is fitting it. Injet's £834 is the only installed price this charger has — no third-party network carries it, so there is nothing to quote against — and it sits well above the £400–600 a standard fit costs on any other charger here. Our home charger install guide covers what a quote should contain.
Tariff compatibility
There is no API into any UK supplier. Scheduling is manual, in the Injet Smart app — set the window once on a fixed two-rate tariff like Octopus Go and leave it. On Octopus Agile, where the price moves every half hour, it is the wrong charger: the Ohme Home Pro reads the day's rates and books the cheap slots itself. For Tesla owners the gap is narrower than it looks, because Intelligent Octopus Go schedules through the car rather than the charger. The wider pattern is in our smart-tariff chargers guide.
The compensation is OCPP 1.6J: the unit is not locked to Injet's back end and can be pointed at another one. That matters more here than it usually would, given who is standing behind the back end.
Price
| Element | Cost |
|---|---|
| Unit only | £486 |
| Injet's installation | £834 |
| Installed, total | £1,320 |
Both figures are Injet's, with the VAT its shop leaves off put back on. The £486 unit is £8 above a Tesla Wall Connector, £81 above an Easee One and £124 above the Sync Energy Wall Charger 2. This is not a budget charger undercutting the field, and at £1,320 fitted it is not a mid-price one either.
Against the field
£1,320 installed is more than a Pod Point Solo 3S, which is £999 with installation included and a five-year warranty behind it. It is more than an Ohme Home Pro at £935–£1,035 installed, which follows a variable tariff — this cannot. The EVEC VEC03 is £719–£919 installed on the same grant and the same OCPP 1.6J, and the Sync Energy Wall Charger 2 is £602–£962 installed while matching the Injet line for line: the grant, OCPP 1.6J, IP65, IK10, PEN protection — from the EV brand of a UK-listed group. There is nothing on Injet's datasheet that a cheaper, better-known charger does not already do, and every number on it is Injet's own.
Related reading
Keep going →
Complete Guide to Home EV Charger Installation
Everything about installation — costs, timeline, and finding an installer.
How Much Does It Cost to Charge a Tesla at Home?
Detailed cost breakdown with off-peak tariffs and annual savings.
OZEV EV Charger Grant UK 2026
Who's eligible for the £500 government grant and how to claim.
Solar Panels and EV Charging UK Guide
Can you charge your Tesla for free with solar panels?
Best EV Charger for Solar Panels UK 2026
Ranked comparison of all solar-compatible chargers.
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