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When installing an EV charging point, it’s important to understand how much charge a user can draw in a given time period.
For example, when installing chargepoints at a shopping centre, a faster rate of charge is more important then when installing a home chargepoint to be used over night.
In this article, we’ve set out the factors that affect charging speed and how to calculate charging times.
There are three factors that affect charging speed.
The first calculation to make is how long it will take to recharge an empty battery.
This is known simply as the empty-to-full charging time.
Charging time = Battery Capacity (kW) / Chargepoint Rating (kW)
In normal use, EV drivers will never have a completely empty battery. We can take the formula above one step further by working out how long it will take to charge a partially empty battery.
Charging time = (1 -( percentage charged / 100)) * Battery Capacity (kW) / Chargepoint Rating (kW)
Don’t worry if this formula seems confusing.
To help make things easy for you, we’ve created an interactive calculator below. Feel free to bookmark this page and return to use the calculator whenever you need.
When charging at a destination, many EV drivers are looking to “top-up” their battery instead of receive a full charge. This will give them confidence that they will always have the range they need. Because of this, most locations such as supermarkets and leisure parks use fast chargers which are ideal for this application.
We’ve set out the calculation for additional miles of range below. It’s slightly more complicated as it requires you know the efficiency of the vehicle.
As a guide, the most efficient EVs currently available are around 240 Wh/mile. The least efficient use around 420 Wh/mile.
Added Range = Time in hours * Chargepoint power * 1000 / Efficiency in Wh/mile
As before, we’ve created an easy to use calculator below.
Acrospire offer a turnkey asset survey solution which easily integrates with any existing asset registry.
To learn more, click the button below.
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©2020 Acrospire
Making customer-first problem solving our focus, we were born from a belief that the lighting industry deserves better. Specifying lighting or EV shouldn’t be complicated: everyone deserves the right product, built to last, delivered on time and with a smile by a team who love what they do.
Making customer-first problem solving our focus, we were born from a belief that the lighting industry deserves better. Specifying lighting or EV shouldn’t be complicated: everyone deserves the right product, built to last, delivered on time and with a smile by a team who love what they
At Acrospire, education is key to improving the quality of our products. We engage with our supply chain to learn about new technologies and actively participate in industry events and industry bodies, such as the ILP and the HEA. We continually list
We focus on our customers not our competition. We manufacture our products in the UK: with the exception of our solar products, our supply chain is within a 60-mile radius of our factory in Basingstoke: to maintain greater control over quality. We al
Speed of response is crucial when it comes to resolving warranty issues. If we’ve made a mistake, we own it, get to the root cause, and fix it as quickly as possible. We believe in timely communication with our customers and making the resolution pro
Test and Test Again
We believe in independent testing and certification. Our new product development is in line with ISO 9001. Many of our products hold ENEC Certification. To meet the requirements of ENEC we also send random product samples for third party safety testi
Our product design is another key factor in our ability to offer a 12-year warranty. We value engineer rather than cost cut, never compromising on quality. We stick to our processes and engage with our supply chain to ensure that every product meets
Making customer-first problem solving our focus, we were born from a belief that the lighting industry deserves better. Specifying lighting or EV shouldn’t be complicated: everyone deserves the right product, built to last, delivered on time and with
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Our story
The idea for Acrospire was formed in 2012 when founder Tim envisioned a different kind of lighting manufacturer: one that would not only deliver outstanding customer experiences but also prioritise fair treatment for its employees.
We’ve come a long way
Motivated by the belief the industry wanted and needed better, Tim shared his plan to establish his own venture with Hatty, who simply couldn't let him do it alone.
The rest, as they say, is history.
Protecting local jobs and ensuring the best quality possible.
Working from a rented office by day and assembling lanterns in a garage at night, Tim and Hatty set to work.
11 Years later
Acrospire now inhabits a 14000² ft manufacturing facility in Basingstoke, Hampshire. We’re a proud partner of the Made in Britain scheme, ISO9001 certified and a member of all relevant lighting industry trade bodies.
Along with great relationships with our customers and a great team! We've attracted some of the most experienced members of the lighting industry, all by following one golden rule.
A simple ethos
That runs through all that we do. Customers who have made the switch to Acrospire have found working with us to be a breath of fresh air.