A home or business EV charger needs very little day-to-day care, but it is a fixed electrical installation and it should be inspected by a competent electrician. There is no single legal interval for every charger. UK industry guidance says the next inspection date should be set by the charger’s condition, age and use. Many installers recommend a yearly check as a sensible starting point. Between those visits, you can look after the unit with simple visual checks and a regular test of the RCD protecting it.
This guide explains what you can do yourself, what a professional service includes, which signs mean you should call someone, and how the original installation affects the care your charger needs later.
TL;DR
- Set the inspection interval by the charger’s condition, age and how heavily it is used. Industry guidance does not give one fixed number for every unit, and an annual professional check is a common approach.
- Owner care is limited to looking at the outside of the unit and cable, keeping it clean and dry, and pressing the RCD test button at the interval your installer or the IET guidance advises.
- A professional inspection covers visual checks, earth and polarity tests, fault current, RCDs and a charger function test, and it should end with a written record.
- Never open the charger or repair it yourself. Call a qualified electrician if you see damage, tripping or error codes.
- Good installation, with a proper survey and certificate, makes later maintenance simpler and quicker.
Table of Contents
- How often does an EV charger need servicing?
- What you can safely check yourself
- Signs your EV charger needs a visit
- What a professional EV charger service includes
- Why good installation makes maintenance easier
- Home chargers and business chargers: what changes
- A practical maintenance calendar
- Our perspective
- Need a charger fitted or checked?
- FAQ
- Sources
How often does an EV charger need servicing?
The honest answer is that it depends on the charger. The Safety Assessment Federation’s guidance on formal inspection and testing of EV charging equipment says the recommended next inspection frequency should be based on the equipment’s condition, age and use. That is a risk-based approach rather than a fixed calendar rule.
In practice, that leads to a few sensible patterns:
- A new home charger in a dry garage, used by one car: a lighter-touch schedule can be reasonable, with an annual check as a comfortable default.
- An outdoor charger on a driveway or exposed wall: weather, damp and temperature swings make a yearly look more valuable.
- A workplace, landlord or shared-parking charger used by many drivers: cables are pulled, dropped and driven over more often. Frequent inspection is easier to justify, and written records matter if you are responsible for other people’s safety.
- An older unit, or one that has had faults: shorten the interval until you are confident it is stable.
If you manage a commercial property, it also makes sense to line up the charger’s checks with the rest of your electrical testing. Our article on fixed wire testing for commercial properties shows how that fits together.
What you can safely check yourself
Owner maintenance is deliberately modest. A charger carries mains-level current for hours at a time, so anything that involves removing a cover, touching internal wiring or changing settings behind a panel belongs to a qualified electrician.
What you can do, with the charger idle and the car unplugged:
- Look at the casing. Check for cracks, discolouration, signs of heat, water marks or anything that looks loose on the wall.
- Inspect the cable and plug. Look for cuts, kinks, flattened sections, exposed conductors or a connector that looks scorched or bent. A damaged cable is a reason to stop using the charger, not to tape it up.
- Check the connector and socket. Make sure the pins are clean, dry and free of debris, and that the cable still clicks in firmly.
- Clean gently. Wipe the exterior with a dry or barely damp cloth. Do not use a pressure washer or spray directly at the unit, and do not push anything into the connector.
- Keep the area clear. Make sure cables are not trailing across wet ground or a place where cars will run over them, and keep ventilation clear around the unit.
- Store the cable properly. Hang tethered cables on the holder rather than leaving them on the ground.
- Read the manual. Your charger’s manufacturer will say what cleaning and care is acceptable for that model.
Test the RCD
The one hands-on electrical check commonly recommended for owners is the RCD test. The IET advises that RCDs associated with EV charging installations should be tested at six-monthly intervals using the test button, where one is fitted. Press the test button on the RCD at your consumer unit or the dedicated enclosure, and it should trip. Then reset it. If it fails to trip, or will not reset, stop using the charger and call an electrician.
Tell household members first, as testing will cut power to the circuit it protects. Some chargers contain their own protective devices, so check which one applies to yours and follow your installer’s handover notes.
Signs your EV charger needs a visit
Chargers usually tell you something before they fail completely. Contact a qualified electrician if you notice:
- Repeated tripping of the RCD or breaker when the car is charging.
- Warm or hot spots on the casing, cable or plug during or after a session.
- A burning smell, buzzing, crackling or visible scorching. Stop charging immediately, and if there is smoke or fire, leave the area and call 999.
- Physical damage to the cable, plug, enclosure or wall fixing, including water getting in.
- Persistent error codes or fault lights that do not clear when you unplug the car and restart in line with the manual.
- Charging that is slower than usual or keeps stopping part-way, particularly if it has happened with more than one vehicle.
- Connectivity problems where an app-controlled charger drops off the network or ignores its schedule.
- A loose or wobbly unit on the wall or post.
Some of these have simple causes, such as a car-side issue or a router problem. The point is that you should not have to diagnose them. If it involves heat, tripping or damage, treat it as an electrical fault and get it checked before you use the charger again.
What a professional EV charger service includes
A proper inspection is more than a wipe-down and a glance. SAFed’s guidance describes professional inspection and testing that includes visual checks of components and enclosures, protective-conductor continuity, polarity, earth-loop impedance, prospective fault current, RCDs and charger function.
In plain terms, a visit from a competent electrician should cover:
| Check | What it tells you |
|---|---|
| Visual inspection of unit, cable, connector and enclosure | Damage, wear, water ingress, loose fixings or signs of overheating |
| Protective-conductor continuity | The earth connection is sound, so fault current has a safe route |
| Polarity | Live and neutral are connected the right way round |
| Earth-loop impedance | The circuit will disconnect quickly enough in a fault |
| Prospective fault current | The supply and protective devices are suitable for the available fault level |
| RCD testing | The device trips as it should |
| Charger function test | The unit communicates with a vehicle and delivers power as designed |
A good engineer will also check that the settings still suit your setup, for example if you have added solar, a battery or another large load since the charger was fitted. Ask for a written report or certificate when the visit is done. It gives you a baseline for the next inspection and a record if your insurer or tenant asks.
Firmware and software updates can be part of servicing too, but the right approach depends on the manufacturer. Follow the maker’s instructions for your model and let your installer apply anything that touches protection or load settings.
Servicing and the rest of your energy system
A charger rarely sits alone. If it shares a supply with solar panels, a battery, a heat pump or other heavy loads, the checks that matter include how those loads are managed. Our guides to EV charger load balancing and dynamic load management explain why settings should be reviewed when the property changes. If you are pairing a charger with panels, our Hampshire guide to EV charger and solar pairing covers the practical side.
Why good installation makes maintenance easier
Most long-term charger problems begin on day one: an unsuitable cable run, a missed survey, an unsuitable protective device or poor weatherproofing. A well-run installation keeps later servicing simple.
Official guidance for authorised installers on the government’s chargepoint schemes describes a process that includes a pre-installation survey, notification of the distribution network operator, installation by an authorised installer, an Electrical Installation Certificate and testing to confirm the charger works and meets safety requirements. Installers on the grant scheme must carry out a survey before installation.
Here is what that means in practice, step by step:
- Survey. The installer looks at where the charger will go, the cable route, the consumer unit, the earthing arrangement and the capacity of your supply.
- Choosing the unit and location. Weather exposure, parking position and how the household uses the car all shape this decision.
- Notifying the network operator. Where required, this happens before or at the time of installation.
- Installation. Cabling, protective devices, the charger itself and any communications are fitted to the relevant standards.
- Testing and certification. The installer tests the circuit and charger, then issues an Electrical Installation Certificate.
- Handover. You should be shown how to use the charger, where the RCD is, what to do if it trips and who to call.
Keep the certificate and handover paperwork somewhere safe. They are the starting point for every future inspection. Authorised installers working on the government schemes must keep installation documentation, including certificates and photographic evidence, for at least three years, but you should keep your own copies for as long as you own the charger.
Standards behind the work
For chargepoints installed under the government grant, work must follow BS EN 61851, BS 7671, the IET Code of Practice for Electric Vehicle Charging Equipment Installations and the Electricity Safety, Quality and Continuity Regulations. Even when you are not claiming a grant, those are the benchmarks a competent installer should be working to. The same page notes that, before installation, the chargepoint model needs to be eligible for the relevant grant if you plan to claim one.
If your charger is a private one in Great Britain and was installed after 30 June 2022, smart charge point rules apply. The IET explains that the regulations cover private chargepoints up to 50 kW installed after that date, requiring smart functionality, cybersecurity and minimum safety provisions. That affects what a replacement or upgrade should include, so mention the installation date when you ask for a service.
Home chargers and business chargers: what changes
For homeowners, maintenance is mostly about keeping records, doing the RCD test and calling for a professional check at an interval that suits the charger’s age and use. Keep an eye on any changes at the property, such as a new battery or a second EV, because they can change how the charger should be set up.
For landlords, a charger in a rental is part of the electrical installation you are responsible for providing safely. Keeping the certificate, scheduling inspections and sorting out who reports faults is easier if it is written down. Our guide for UK landlords on EICR deadlines and compliance is a useful companion.
For businesses, chargers are used by staff, customers or fleet drivers, so wear is faster and the cost of downtime is higher. A planned inspection schedule, a clear fault-reporting route and records of every visit all reduce disruption. Many commercial maintenance plans are priced per site, so it helps to count how many charge points you have before asking for a quote.
A practical maintenance calendar
Use this as a starting point and adjust it with your installer’s advice.
| When | What to do |
|---|---|
| Every charging session | Glance at the cable and plug before connecting. Do not use a damaged cable. |
| Monthly | Wipe the exterior, check the cable holder, clear debris around the unit. |
| Every six months | Press the RCD test button, as the IET advises, and reset it. |
| Yearly, or as the condition, age and use of the unit suggest | Book a professional inspection and keep the report. |
| After any change to the property | Review settings if you add solar, a battery, another EV or a big electrical load. |
| After any fault, flood or impact | Stop using the charger and have it checked before it goes back into service. |
Our perspective
Most of the charger problems we are asked about trace back to the same few things: a cable that has been driven over, water getting where it should not, or a setup that no longer matches the house after solar or a battery was added.
We think of a charger as part of the whole electrical system, not a gadget on the wall. Our work covers EV chargers alongside solar, battery storage, home automation and general electrical testing, so when we look at a charger we are also looking at the supply, the consumer unit and the other loads it shares with. That is the view that catches problems early.
Our advice is simple. Keep your installation paperwork, test the RCD on a regular schedule, and have a qualified electrician inspect the charger at an interval that suits how you use it. We hold MCS and NICEIC accreditation, and we aim to explain what we find in plain language and leave the site tidy.
If you are in Dorset, Hampshire or Devon, we are happy to look at an existing charger or fit a new one properly from the start.
Simon
Need a charger fitted or checked?
We install EV chargers for homes and businesses across Dorset, Hampshire and Devon, and we can look at how a new or existing charger fits with your solar, battery and wider electrical system. You can see what we offer on our EV charger installation page.
If you also have solar panels and a battery, we offer a Solar & Battery Service & Maintenance Plan at £175 per year. For other electrical testing, CCTV or fire alarm work, start from our main site.
FAQ
Does a home EV charger need an annual service?
There is no single interval that applies to every charger. Industry guidance says the next inspection should reflect the unit’s condition, age and use. An annual professional check is a common and sensible approach, particularly for outdoor units, and your installer can advise on the right schedule for yours.
Can I fix or open my EV charger myself?
No. Owners should limit themselves to looking at the outside, keeping the unit clean and dry, and pressing the RCD test button. Anything that involves removing covers, touching wiring or changing protection settings should be done by a qualified electrician, because the charger carries high current for long periods.
What should I do if my charger keeps tripping the RCD?
Stop using the charger and leave it switched off. Repeated tripping can point to a fault in the cable, the charger or the circuit. Book a qualified electrician to test it, and mention when it trips and whether it happens with every vehicle.
What paperwork should I keep for my EV charger?
Keep the Electrical Installation Certificate, the handover notes, the manufacturer’s manual and any inspection reports. They show what was installed and tested, and they give the next engineer a baseline. If you plan to sell the property or let it, they are also useful for buyers, tenants and insurers.
Does a charger need checking after I add solar panels or a battery?
It is a good idea. Adding generation, storage or other large loads can change how power is shared in the property, and the charger’s settings may need reviewing. Ask your installer to check the setup when the new equipment is commissioned.
Sources
- SAFed: guidance on formal inspection and testing of electric vehicle charging equipment
- IET: electric vehicle charging installations FAQs
- GOV.UK: electric vehicle chargepoint and infrastructure specifications
- GOV.UK: residential and commercial chargepoints, become an authorised installer
- GOV.UK: electric vehicle chargepoint grant installer terms and conditions letter
- IET Wiring Matters: fifth edition of the Code of Practice for EV charging equipment installation
