Frequently asked questions.
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What is the Locking Function?
The locking function (from your mobile) secures your charging cable in the charger socket, protecting against cable theft. How it works: The cable automatically locks into the charger when you're charging your car For untethered chargers, it also locks your cable in place when you're not charging, preventing theft if you leave it plugged in
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Can I be sure this charger will work with my home and my car?
Absolutely. All our chargers are designed to work with the UK’s standard electrical supply and with every EV connector type currently on the market. Before installation, our team or your qualified electrician will double-check that your setup is compatible. If you’re buying a Plus model, features like solar integration or the wireless Energy Manager will also be assessed for your home to ensure seamless operation.
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What affects my EV charging speed?
Your EV charging speed depends on three factors working together: 1. Your home's power supply: Single-phase power (85% of UK homes): Supports charging up to 7kW Three-phase power: Supports faster charging up to 22kW 2. Your car's onboard charger (OBC): Most electric vehicles: 7kW Plug-in hybrids: Typically 3.7kW Some newer EVs: 11kW or 22kW 3. Your charger model: We offer 7kW and 22kW home AC chargers. How it works: Your actual charging speed will be the lowest of these three factors. Example 1: Single-phase power + 7kW car + 7kW charger = 7kW charging speed Example 2: Three-phase power + 22kW charger + 7kW car = 7kW charging speed (limited by the car)
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What is the difference between single-phase and three-phase power?
Single-phase power is the standard electricity supply for most UK homes — around 85% of domestic properties use it. It delivers electricity through one live wire and is protected by a single fuse (typically rated at 60, 80, or 100 amps). With single-phase, the maximum charging rate for an EV charger is usually 7.3kW, which is ideal for overnight charging and suits most households. Three-phase power, on the other hand, is more common in commercial buildings or larger homes. It uses three live wires, allowing electricity to flow more efficiently and at higher capacity. If your property has a three-phase supply, you can install a charger capable of delivering up to 22kW —useful for larger battery EVs or homes with multiple electric vehicles needing faster turnaround. In short: • Single-phase = up to 7.3kW charging, standard for most homes • Three-phase = up to 22kW charging, suited for high-demand setups, commercial car parks, multi-dwelling residences.
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What colour options are available for my charger?
We love colour. Mandy Simpson has curated a beautiful range to suit your home or business. The Home Series Basic model comes with our standard plastic cap in 4 classic colours. The Plus model gives you more choice — premium metal or wood lids, and 14 different front colours so you can create your own combination. Mandy works one-to-one with homeowners, interior designers, and architects. She offers a free personal consultation to help you choose colours that work with your brickwork, windows, doors, and overall environment. Mandy often helps those that live in listed homes or conservation areas put together a supporting pack to win approval from council planners and relevant heritage preservation authorities. Email her at mandy.simpson@simpson-partners.com
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Are your chargers future-proof?
Yes. We are deeply interested in technology and innovation in technology and our software and hardware teams have always held future-proofing as a core principle. Simpson & Partners EV chargers are designed to be compatible with evolving EV technology, including different charging speeds, connectors and smart energy management. This ensures that your charger continues to meet your charging needs over time. Our chargers are repairable and upgradeable which is more than some other brands. This means in a few years, when you want your charger to have the latest firmware, you'll be able to purchase the latest circuit board and swap it out. As an example, Gen 1 Home Series chargers came out in 2022. Intelligent Octopus Go wasn't available as a tariff then. For these customers, we offer a Version 3 upgrade kit for £85, so they can swap out their old circuit board and connect to this smart tariff.
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My charger is out of Warranty, are you able to help?
Our V3 hardware now comes with an industry-leading 5-year hardware warranty. But support doesn’t stop there; whether you’re an existing customer or someone with a charger from the previous company, we’re committed to supporting you long into the future. For chargers that are out of warranty, we aim to provide ongoing help along with replacement hardware at cost where needed. We’re also launching a full catalogue of replacement parts, allowing you (or your installer) to repair your charger easily. This will include everything from front panels and lids to PCBs, sockets and even the small fixings. We’re also introducing a V3 Upgrade Programme, giving you the option to update your charger’s internal hardware to the V3 platform and benefit from the latest features and reliability improvements. So even if your warranty is coming to an end, there’s no need to worry we’ll continue to support you and ensure your charger stays reliable for the long term.
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How durable are your chargers?
Our EV chargers are built to last. We provide industry-leading protection and peace of mind with: 5-year warranty on all hardware components 10-year warranty on the enclosure and lid Our chargers use robust, weather-resistant materials designed to withstand outdoor conditions and frequent daily use, ensuring reliable performance for years to come.
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What’s in the box?
Your charger arrives pre-assembled with the top and front colours you selected. Inside you’ll also find: *Your wired Energy Manager, usually located in the “Important Bits” box inside. *Quick Start Guide, including QR codes to download the Simpson & Partners app. *Serial Number & PIN card keep this safe, as it provides secure access to your charger and is required for setup, support and remote diagnostics.* Mounting template and standard fixings (if applicable). Note: If you ordered cable hooks, these are shipped in a separate box.
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Who are Simpson & Partners, and why do people trust us?
We’re a UK-based EV charger manufacturer. Founded in 2018 by husband and wife team Mandy and David Simpson, who focus on creating high-performance charging solutions with excellent design aesthetics and smart future proof technology. S&P chargers are designed and built to meet real-world needs. Customers trust us because we combine innovative engineering know-how with exceptional support, ensuring your EV always charges safely and efficiently today and into the future. S&P are proud to say that it is their ethos their chargers are not destined for landfill. Trusted by over 700 qualified electricians in the UK. We have a 4.3* rating on Trustpilot. Our chargers are built by us in our HQ based in the Cotswolds SN16 9SH. All our chargers are upgradeable and repairable.
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If Octopus controls charging, will it always be off-peak?
Not necessarily. Octopus may charge your car at any time to optimise cost and carbon efficiency. Your bill will still reflect the lower smart charging rate.
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Should I Upgrade to 3-phase power supply?
It's up to you, but upgrading to 3-phase isn't common for most homes. When 3-phase makes sense: You have two EVs that could share the charging load You're already planning to install high-demand appliances like heat pumps, hot tubs, or indoor swimming pools You want the fastest possible home charging (up to 22kW) Who typically has 3-phase power? Most commercial premises like warehouses, farms, factories, shops, and restaurants have 3-phase. Some residential properties do too – particularly new-build large homes, barn conversions, or apartments in tower blocks with lifts. The reality: Upgrading to 3-phase can be time-consuming and expensive. For most homeowners with a single EV, standard single-phase power and a 7kW charger provides perfectly adequate overnight charging. How do I explore the option? Contact your district network operator or the national grid .national grid.
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How Easy Is It to Upgrade to 3-Phase Power?
The short answer is it’s not that simple (or cheap) to upgrade your property to 3-phase power supply. But here are the steps on how to upgrade to 3-phase: You’ll need to reach out to your Distribution Network Operator (DNO). If you don’t know who your DNO is, contact your electricity provider or search “who is my DNO”. Your DNO are responsible for the infrastructure that supplies electricity to your home or business. Assessment: The DNO will assess whether a 3-phase upgrade is feasible for your property. The feasibility study outcome depends on your location, existing supply and how close you are to a 3-phase network. Costs can vary widely, from a few hundred to several thousand pounds. It really depends on the complexity of the work. How long does it take? It may take several weeks or months to complete, especially if roadworks or new cabling are required. You will bear the full cost of this work as there are no grants available.
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Can I get a bespoke colour for my EV charger?
Yes, we offer bespoke colour-matching in exceptional cases – this is more common for businesses wanting to match their brand than for home installations. Our standard collection: We have 132 carefully curated colours and finishes. Our creative director, Mandy Simpson, personally selects each one to harmonise beautifully with walls, brickwork, and gardens. Important note: Our standard powder coating comes with a 10-year guarantee. Custom colours may not carry the same guarantee. Interested in a bespoke colour? Contact sales@simpson-partners.com (POA) and our production team will assess your request.
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I’m looking to get a quote for installing multiple EV chargers for my commercial property.
Absolutely. We provide tailored quotes for multiple charger installations at commercial sites. Here's how it works: Use our online configurator or contact our team to specify the number of chargers you need, power rating (7 kW or 22 kW), installation type (wall-mounted or freestanding), and any business features like RFID access, MID metering, or built-in RCBOs. We'll build a quote for you. If you don't have your own electricians, we can connect you with an independent electrical team who will complete a site survey. They'll need photos of your consumer unit, fuse board, and cable routes, plus details about your requirements (payment systems, solar PV, battery integration, etc.). You'll then receive a detailed quotation covering hardware, installation, any civil works or cable trenching, and commissioning. Government grants are available for charging infrastructure, so remember to ask your installer to claim these on your behalf. Branded colour finishes are available on request for business clients.
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Can I arrange my own installer and will this affect the Warranty?
Absolutely! You're welcome to use your own qualified electrician to install your Simpson & Partners Home Series charger. We recommend sharing our installer guides with your electrician beforehand – they'll find our chargers straightforward to install Good news about your warranty: Using your own installer won't affect your warranty at all, as long as the installation is completed by a qualified professional.
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How easy are Simpson & Partners EV chargers to install?
Our chargers are easy to install and require no earth rods. Installers enjoy putting our product into homes. Install templates are on the packaging. We’ve got easy to use Bluetooth set up and electrician friendly details such as screw rib bars which hold screws in, eliminating the chance of losing them on the ground.
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What is a Wired Energy Manager?
The Wired Energy Manager is a clever small device that balances the electrical load between your car and home. It constantly measures the amount of energy that your home is using and sends any availiable energy to your car (if it's plugged in). Known as a 'load balancing' device it avoids nuisance trips by prioritising energy to the home. So for example when you use the hob, hot tub, microwave etc, the energy manager will prioritise energy for your home appliances and reduce energy going to your car. As soon as you switch off your home appliances and 'reduce the load' on the house, it sends more to your car. We include a Wired Energy Manager with every Home basic or Home Plus charger.
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Will Octopus still work if connected via my charge point?
Yes — connection via our charger is fully supported and will work as expected. Octopus can still start and stop charging, but it cannot automatically stop at your set battery limit because it doesn’t read the real-time charge level.
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What’s the difference between the Home 7 and Home 22?
The Home 7 and Home 7 Plus are both single-phase AC chargers and will deliver up to 7.3kW (32 amps) to your car. The Home 22 is a three-phase charger and can deliver up to 22kW—three times the power. Just keep in mind, you’ll need a three-phase power supply to get the full 22kW.
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Is the cable hidden or wrapped around a holder?
Our tethered EV charging cables can be neatly wrapped around the charging unit itself, keeping your driveway or garage tidy.For added convenience, we also offer a colour-matched cable hook (£49) as an optional extra at checkout. This provides a nice way to keep your cable tidy and it's by default colour matched to the chargers front.
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How does the build quality of Simpson & Partners chargers compare to other brands?
We have an industry leading 10 year warranty on the enclosures. Our charger fronts are made of die-cast metal. We designed and chose metal for it's superior strength and durability. The vast majority of EV chargers on the market are made of plastic enclosures. This limits the shape, finish and colours. We then powder coat by hand to a very high finish. Compared to plastic ev chargers, our chargers are heavier and customers and installers often comment on how they can feel and see the build quality. Our charger lids are available in precision-CNC milled metal or sustainable Accoya real wood. With IP65-rated enclosures, premium materials, and rigorous testing, they’re built to withstand the UK’s toughest weather. Many other brands don’t match this level of durability, which means our chargers stay looking and performing like new for longer. ‍
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Are some colours only available on certain models?
Yes. The Home Basic model comes with a choice of four metal fronts and a grey plastic lid. The Home Plus model has 12 different front colours, 4 colours of metal lids and 4 colours of wooden lids. This ensures you get the right balance of style and functionality for your wallet.
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What is the difference between the Home Basic and Home Plus?
The Basic comes with a plastic lid and the Home Plus has eco wood or metal lid options. The Plus comes with more front colours, options of wireless energy management and ethernet connection (rather than only wired energy management and wifi only), courtesy lights and the Charge Doctor. The Charge Doctor is a clever device that automatically detects faults and instantaneously fixes them without you even knowing about them.
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How do I choose the best electric vehicle charging solution for my needs?
Choosing the right EV charging solution depends on your property, vehicles, and how you'll use it. At Simpson & Partners, we've built a product solution designed to hit all the things that matter – our chargers are beautiful, durable, repairable and upgradable, so they won't end up in landfill. Here's what to consider: Charging speed – 7 kW works well for standard overnight home charging and runs on single-phase power available in most homes. 22 kW is better for faster top-ups and larger batteries, but requires a three-phase power supply, which typically isn't widely available in domestic properties. Charger type – Tethered chargers offer convenience with an attached cable, untethered gives you flexibility to use your own cable, or choose a freestanding unit if you don't have a suitable wall. Smart features – Our chargers connect with Intelligent Octopus and offer app monitoring, energy management, and integration with smart tariffs to help reduce costs. Installation location – Wall-mounted chargers suit most homes, while freestanding units work well for driveways and commercial sites. Home vs business use – We offer a dedicated commercial range built for heavy-duty business environments and high-demand use, featuring RFID access control, MID metering for accurate billing, and built-in RCBOs for safety. For home charging, we provide industry-leading warranties: 10 years on the enclosure and 5 years on the electronics, giving you complete peace of mind. Future-proofing – Our chargers can be upgraded for emerging technologies like V2G (vehicle-to-grid), and because they're repairable, they're built to last for years to come. Design and aesthetics – Choose colours and finishes that complement your property, with options suitable for heritage or listed buildings.
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