№ 33 · Reviewed · 2026 review
Fox ESS
L Series 7.3kW
L07P.
Review verdict
Fox ESS L Series 7.3kW decision summary
- Unit only
- £344
- VAT included
- Installed estimate
- £744–£944
- derived market estimate
- Warranty
- 2 years (capped at 28 months from manufacture)
- Grant position
- Approved unit
- Customer and property eligibility is separate
What stands out
Main limitation
The installed range is an estimate. The source date above is separate from the editorial review date.
£344 buys an OZEV-approved 7.3kW tethered charger from a company better known for solar inverters. The L07P is on the DfT's eligible chargepoint list — FOXESS CO. LTD, L07P, 7.3 kW, residential and commercial — with a 5-metre Type 2 lead and 32A single-phase output, which is a UK Tesla's full AC rate. On the sticker, one of the cheapest routes onto a grant-eligible smart charger.
The caveat is a paperwork one, and it decides whether £344 is actually cheap. Fox's documentation for the L07P describes no open-PEN protection. The user manual lists the protections as over-current, over/under voltage, over-temperature, ground and surge, plus an internal 6 mA RCD-DD meeting the trip characteristics of IEC 62955, with a footnote that an external RCCB is still required. PEN, PME, TN-C-S and BS 7671 appear nowhere in it. Fox's dearer A series is the opposite: a dedicated "Earthing System Requirements (UK Only)" section, a PEN fault protection statement in the appendix, and an explicit line that on a TN-C-S (PME) supply no earth electrode is needed.
Most UK homes sit on a TN-C-S (PME) supply, where BS 7671 722.411.4.1 wants open-PEN protection at the chargepoint. Where the manufacturer documents it — the EVEC VEC03 at £349 and the Sync Energy Wall Charger 2, tethered from £302, both do — the electrician certifies against that statement and moves on. With the L07P there is nothing to certify against, so the compliant fallback is an earth electrode: extra labour on the day, and on a block-paved frontage, a flat, or rocky ground, sometimes not possible at all. Get your installer to confirm in writing whether your property needs one before you order. A £344 charger plus an earth rod is not cheaper than a £349 charger that doesn't need one.
Best for: Buyers who want OCPP 2.0.1 and a wired network port at the bottom of the market, on a property where the earth question has already been answered.
Installation
Fitting the Fox ESS L Series 7.3kW.
A small unit — 3.6 kg, 197 × 196 × 105 mm — on a dedicated 32A single-phase circuit. The tethered cable is 5 metres as standard and 6 metres as a paid option, against 7.3 m on the Tesla Wall Connector, so it wants mounting close to where the car sits. IP55 with IK08: sheltered outdoor positions, not fully exposed walls. Fox rates it from -25°C to 50°C, which is more winter than a British driveway is ever going to ask for.
The internal 6 mA RCD-DD meets the trip characteristics of IEC 62955, but Fox's own manual still calls for an external RCCB — Type A or Type B, per local regulation — at the consumer unit, so that is one component the installer is fitting regardless. Add the earth question above and this becomes the rare charger where the install quote, not the sticker, is the number that settles the purchase. Our guide to choosing an installer covers what to ask; the full walkthrough covers the rest.
Specification
- Max Power Output
- 7.3kW (32A, single-phase 230V)
- Cable Length
- 5 metres standard (6m optional)
- Connector
- Type 2 (tethered)
- Connectivity
- Wi-Fi, Bluetooth, Ethernet (LAN)
- Protocols
- OCPP 1.6J / OCPP 2.0.1
- Dimensions
- 197mm × 196mm × 105mm
- Weight
- 3.6 kg
- IP Rating
- IP55 + IK08 (sheltered outdoor)
- Operating Temperature
- -25°C to 50°C (Fox ESS L07P/L11P manual)
- Protections
- Over-current, over/under voltage, over-temperature, ground, surge; internal 6mA RCD-DD (IEC 62955 trip characteristics) — external RCCB required
- Earth Protection
- No open-PEN protection stated in Fox's L07P manual — see review
- Authentication
- Plug & Play, RFID card, or app
- Certification
- CE / UKCA (EN/IEC 61851-1:2019); OZEV-approved — DfT eligible chargepoint model list
- Warranty
- 24 months from installation, capped at 28 months from manufacture
Tariff compatibility
What it costs to run.
Scheduling is set by hand in the Fox app — plug and charge, a controlled mode with reservations, or an RFID card at the unit. On a fixed two-rate tariff like Octopus Go, that is a set-once job and perfectly adequate. On Octopus Agile, where the price moves every half hour, it is the wrong charger: nothing here talks to a supplier, so the schedule gets re-timed by hand or not at all. The Ohme Home Pro reads the prices and books the cheap slots itself.
What the L07P does have is protocol range — OCPP 1.6J and OCPP 2.0.1, with a wired LAN port alongside Wi-Fi and Bluetooth. Pointed at a third-party back end or folded into a home-automation stack, it is more open than most chargers twice the price. Load management runs off an RS485 external meter, wired in on the day. Surplus-solar diversion is not described in the L07P manual at all: Fox markets solar linkage as part of its own inverter and battery ecosystem, and behaviour with a third-party inverter is undocumented. If routing panels into the car is the point of the purchase, the Zappi GLO and the Sync Energy Wall Charger 2 both document theirs. For the wider pattern, see our smart-tariff chargers guide.
Best pairing
EDF GoElectric
- Off-peak rate
- 6.99p
- Saving / year
- £546
Estimated at 10,000 miles a year against the 26.11p/kWh standard rate.
Compare every tariffPrice
What you actually pay.
The unit is currently £344. £400–£600 is the working installation range, putting a typical installed total at £744–£944. The final figure depends on the cable route, consumer unit and any groundwork.
Five-year total
£1,843
Charger, installation, and five years of electricity on EDF GoElectric, at 10,000 miles a year.
Less £500 if you qualify for the OZEV grant.
Against the field
How it compares.
The chargers either side of it on price make the same argument against it. The EVEC VEC03 is £5 more and puts a Type A RCD with 6 mA DC detection and PEN fault protection inside the box. The Sync Energy Wall Charger 2 is cheaper again — from £302 tethered, with a 7.5-metre cable — and also documents PEN protection. Both are OZEV-approved. Against either, £344 is less a saving than a deferred bill.
The warranty is the other thing to price in. Cover is 24 months from installation but no more than 28 months from the date of manufacture, and registration has to be completed within 12 months of manufacture — of manufacture, not of purchase. Heavily discounted stock is exactly the kind that sits in a distributor's warehouse first, and a unit built ten months ago arrives with two months of registration window left.
Further up the list, the Easee One at £489 carries a Type B RCD and open-PEN detection in the box and takes £100–£200 off install labour. The Ohme Home Pro at £539 remains the answer whenever a variable tariff is in the picture.
What we loved
- Plus£344 for an OZEV-approved 7.3kW tethered charger — the L07P is on the DfT eligible chargepoint model list
- PlusOCPP 1.6J and OCPP 2.0.1 — the newer protocol is rare at this price, and neither locks the unit to Fox's cloud
- PlusEthernet as well as Wi-Fi and Bluetooth — a wired option for garages where the signal gives up
- PlusInternal 6 mA RCD-DD meeting the trip characteristics of IEC 62955
- PlusRFID card, plug-and-charge or app start; RS485 meter input for load management
- Plus3.6 kg, 197 × 196 × 105 mm — a small, easy mount
What we didn't
- MinusFox's L07P manual describes no open-PEN protection, though the dearer A-series manual documents it in full — on a TN-C-S (PME) supply that can mean an earth electrode at extra cost
- MinusFox's own manual requires an external RCCB at the consumer unit
- MinusCover is 24 months from installation but capped at 28 months from date of manufacture — old stock eats the difference silently
- MinusRegistration must be completed within 12 months of the date of manufacture, not of purchase
- MinusIP55 with IK08 — sheltered positions only
- MinusNo smart-tariff API: scheduling is manual
- MinusSurplus-solar diversion is not documented for the L07P; Fox pitches PV linkage around its own inverters and batteries
- Minus5-metre standard cable; the 6-metre lead is a paid option
After the evidence
Ask installers to price this exact charger.
The installation brief carries Fox ESS L Series 7.3kW as your preference, together with the property and parking details needed for a useful response.
Related reading
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