If you have a question about charge point technology, you’ve come to the right place. Our experts are on hand to help! We’ve put together a list of the most commonly asked questions to help you in your search for the best EV charging products.
A charging point is a piece of electrical equipment which can be used to recharge an electric vehicle. Charging points can essentially be grouped into two types; those that supply alternating current (AC) to the vehicle, and those that ‘rectify’ AC to provide direct current (DC).
As batteries are DC devices, delivering DC and requiring DC to recharge, use of an AC unit means that an ‘on-board’ rectifier (or ‘charger’) is required to be built into the EV. DC charging points perform the rectification ‘off board’ in the charging unit; one reason why they are often larger and most costly to manufacture. The advantage, however, is that the vehicle no longer requires an ‘on board’ charger and can be charged more quickly. In practice, most vehicles have an on-board charger to be able to use an AC supply.
Dynamic Load Balancing, DLB, is a piece of technology that manages the power supply capacity to a group of EV chargers.
DLB limits the overall power that EV chargers can draw off from a site’s supply, and prevents overload of incoming electricity and power shortage. At the same time DLB simultaneously distributes electricity fairly to all the EVs that are charging.
Sevadis chargers use SMART DLB technology, which automatically controls the power to a group of EV charging points based on the maximum Amps available onsite. The Sevadis DLB technology is integrated into our chargers so there is no need for a separate communications box.
Using Dynamic Load Balancing reduces the need for additional power supply to a site, thus reducing costs and streamlining your operation.
Watch our DLB video or see this article for more info
Open Charge Point Protocol, OCPP, is designed to make electric vehicle networks open and accessible. It represents a set of standards that create a ‘common language’ between EV charge points and online billing and management platforms.
An OCPP compliant charge point is advantageous as it creates the ability to choose and change the online billing and management platform provider on demand. This creates competition in the marketplace and keeps service fees low.
In contrast, in a closed system, you are tied in and cannot move to a different billing and management platform provider.
At Sevadis, all our charge points are OCPP compliant to level 1.6 enabling all the functionality needed in today’s advanced charging systems and giving you greater choice for the future.
Watch our OCPP video or see this article for more info
By law all public chargers must be a Type 2 socket because all electric vehicles are supplied with a Type 2 AC socket connector and cable.
A traditional domestic 3 pin plug is not designed to handle charging loads for long periods of time so is not recommended and will only result in slow charging.
At Sevadis we only use Type 2 AC sockets as they are consistent with public chargers, most non-tethered home chargers and provide fast charging.
Watch our video on socket types for more info
Tethered chargers have an integrated all-in-one cable, and whilst this can provide some convenience, they are also limiting. Not all electric vehicles have the same inlet socket and as electric vehicle technology evolves, so too may the car inlet socket, which could leave a tethered charger redundant in the future.
All electric vehicles are supplied with a Type 2 AC socket connector and cable which plugs into an untethered Type 2 socket charger. At Sevadis therefore we recommend using untethered universal socket chargers to provide maximum flexibility.
Watch our video on socket types and charging to find out more
The new London Plan 2021 came into force on the 2nd of March 2021. It sets out a framework for how London will develop over the next 20-25 years and the mayor’s vision for Good Growth.
The plan informs decisions on planning applications across the capital. Borough local plans must be in ‘general conformity’ with the London Plan, ensuring that London can develop sustainably.
With regards to electric vehicle charging, there are three main points in the plan.
Residential Parking – All residential car parking spaces must provide infrastructure for electric or Ultra-Low Emission Vehicles (ULEVs). At least 20 per cent of spaces should have active charging facilities, with passive provision for all remaining spaces. Previously, the London Plan requested only 20% passive charge point provision.
Retail Parking – Where car parking is provided at a retail development, provision for rapid electric vehicle charging should be made.
Hotel & Leisure – All operational parking must provide infrastructure for electric or other Ultra-Low Emission Vehicles, including active charging points for all taxi spaces.
A battery electric vehicle (BEV) is a vehicle that uses an electric motor to convert chemical energy stored in rechargeable batteries into forward or reverse motion. Pure BEVs have no on-board internal combustion engine.
A plug-in hybrid electric vehicle (PHEV) is similar to a conventional hybrid in that it retains a petrol or diesel engine. However larger battery size increases electric-only range, while the biggest difference is the ability to charge via mains electricity.
In the same way that a plug-in hybrid is an extension of a hybrid, an extended-range electric vehicle (EREV) is an extension of a plug-in hybrid. A conventional engine is retained but is much smaller and the battery capacity is generally increased. In a pure EREV, the wheels can only be driven by the electric motor(s), the internal combustion engine only being used to hold or recharge the batteries as they become depleted.
Driving an electric car certainly feels different the first time round. Most notably an electric car is almost silent (except for wind and road noise). Apart from that electric vehicles are similar to most automatic petrol or diesel equivalents. One noticeable difference is that the torque (driving force) is much higher than conventional vehicles at lower speed, which means EVs can accelerate fast from standstill.
Most new BEVs have a real-world range of around 80-100 miles although some premium models (such as the Tesla Model S) can achieve three times this.
Depending on the model, PHEVs are able to drive 15-40 miles in electric only mode. However, when the conventional petrol or diesel engine is used, PHEVs have a range that can exceed 500 miles on both fuels. EREVs usually offer the same amount of range as BEVs on electric but then can call on a small combustion engine to extend the range to 200-300 miles.
It is possible to maximise your EVs range by turning off electrical appliances such as air conditioning, heating etc. and moderating your driving style to be gentler on the throttle while accelerating, and coming off the throttle earlier to make the most of the car’s regenerative braking topping up the battery’s charge. EV drivers often report gaining experience over time as to the real world limits of their EV’s range.
The speed with which an EV can be fully recharged is dependent on three factors; the charger type (max power available), the model specification, and the battery capacity of the EV.
As charging points can be defined by their maximum power rating – Slow (3kW), Fast (7-22kW) and Rapid (50kW+) – the charger type indicates how quickly an EV could charge. However, this is only half the story as some electric vehicles are limited in how quickly they can recharge due to the specification of the on-board charger. For example, an EV with a 3kW on-board charger connected to a 7kW charging point can only charge at 3kW.
To complicate matters, if an EV has a large capacity battery, this inevitably will take longer to charge even if the power (rate) is high. In general, EVs with relatively long ranges will have larger battery capacities and therefore take longer to recharge on a particular charging point.
While only an indication, for an average EV, typical recharge times are as follows:
Slow AC 3kW: 6-8 hours;
Fast AC 7kW:3-4 hours;
Rapid AC/DC 43/50kW: 30-45 mins for 80%
In most cases, no. For drivers in and around London, another major running cost benefit is that EVs are exempt from paying the Congestion Charge, worth £11.50 per day. For a driver entering the Congestion Charge Zone most working days of the year, this can amount to a saving of almost £3,000 per year.
To qualify for the 100% Ultra Low Emission Discount, an EV must only emit up to 75g/km CO2 and meet at least the Euro 5 emissions standards. Cars meeting these criteria will need to be registered for an annual fee of £10, but then have free access to the Congestion Charge Zone.
Leasing is quite simply the process of acquiring equipment via third-party finance and paying for it in manageable monthly amounts over a pre-agreed term. It’s like a loan, only the loan is secured by the assets you have acquired, which allows for a lower rate of interest.
Putting your hard-earned money to better use is the number one reason why businesses lease. Sevadis products are available on leasing solutions via The Lease Group. The Lease Group work with a number of suppliers and third-party lenders, enabling you to get financing for the equipment you need today, without paying large sums of money upfront. They offer a range of payment options including monthly, quarterly and tenures from 1-7 years, all with fixed sums so you know how much you are paying each month.