Fault diagnosis
Systematic testing to identify the root cause — whether electrical, mechanical, communication, or firmware related.
Keep your chargers running reliably
EV charger repairs and maintenance — fault diagnosis, component replacement, firmware updates, and scheduled servicing across Hertfordshire.
- All brands and models serviced
- Fault diagnosis and rapid repairs
- Scheduled maintenance contracts available
Repairs & maintenance
Minimise downtime maximise uptime
A charger that is not working is a vehicle that cannot charge — we respond quickly to get your infrastructure back online.
Our engineers diagnose faults across all major EV charger brands — from communication errors and cable faults to component failures and firmware issues. We carry common spare parts and can source manufacturer components for less common models.
For businesses and fleet operators, we offer scheduled maintenance contracts with proactive inspections, firmware updates, and priority callout response. Regular servicing extends charger lifespan, prevents unexpected failures, and ensures your charging infrastructure remains compliant and reliable.
Our services
Repairs and maintenance covered
Component repairs
Cable replacement, contactor repairs, display units, and internal component replacement for all major brands.
Firmware updates
Latest firmware installed to resolve known issues, improve performance, and maintain compatibility with evolving vehicles.
Scheduled servicing
Annual inspections, electrical testing, and preventative maintenance to catch issues before they cause downtime.
Safety compliance
Periodic inspection and testing to ensure your chargers remain electrically safe and regulation compliant.
Maintenance contracts
Fixed-price annual contracts with priority response, scheduled visits, and remote monitoring for commercial sites.
Recent installations we maintain
What our clients say
“The 7kW home charger was installed in a single day with no disruption. They assessed our supply capacity properly, recommended load balancing instead of a costly consumer unit upgrade, and the charger has worked flawlessly since commissioning.”
“We needed workplace charging for six staff vehicles. Hertfordshire EV Charging surveyed the car park, specified twin charge points with load management, and handled the OZEV workplace grant application. Professional from start to finish.”
“Clear quotation, no hidden extras, and the installer explained the smart scheduling app before leaving. Our overnight charging costs have dropped significantly since switching to off-peak tariffs.”
“They fitted a tethered charger on our garage wall with a neat cable run — exactly where we wanted it. The site survey was thorough and they answered every question about the OZEV grant without any pressure.”
Repairs & maintenance FAQs
Common questions about EV charger repairs
Answers about EV charger repairs, maintenance, and what to do when your charger stops working.
Need charger repairs or maintenance?
Contact us to diagnose a fault, book a service visit, or discuss a maintenance contract for your charging infrastructure.
Service areas
- EV Charger Installation in Hertfordshire
Professional EV charger installation across Hertfordshire — home, workplace, commercial, and smart charging systems from survey through commissioning.
- EV Charger Installation in St Albans
Professional home and workplace EV charger installation for St Albans properties — Georgian townhouses, Victorian villas, and modern family homes across the city.
- EV Charger Installation in Watford
Professional EV charger installation for Watford homes and businesses — workplace charging, home units, and commercial installations across Hertfordshire's largest town.
- EV Charger Installation in Hertford
Professional EV charger installation for Hertford homes and businesses — town-centre terraces, riverside properties, and suburban semis across the county town.
Related projects
- Home EV Charger
7kW tethered home charger on a St Albans driveway — discreet wall-mounted installation with load balancing for a period property with limited supply capacity.
- Workplace Charging
Dual 22kW workplace charging points for a Watford office car park — RFID access, billing integration, and load-managed supply across four bays.
- Smart EV Charging
App-controlled smart charger with solar integration for a Berkhamsted family home — scheduled off-peak charging and real-time energy monitoring.
- OZEV Grant Installation
OZEV grant-funded home charger for a Bishop's Stortford semi — compliant documentation, 7kW untethered unit, and full DNO notification.
All services
- Commercial EV Charging Points
Commercial EV charging infrastructure with rapid chargers, payment systems, and backend management for public and fleet use.
- Home EV Charger Installation
Professional home EV charger installation with OZEV grant support, smart controls, and reliable charging at home.
- OZEV Grant Installation
OZEV-approved grant installation with full application handling — reducing the cost of your home or workplace EV charger.
- Smart EV Charging Systems
Smart EV charging with app control, off-peak scheduling, solar integration, and dynamic load balancing.
- Workplace EV Charging
Workplace EV charging solutions with load management, billing options, and scalable infrastructure for growing fleets.