EcoG launches Charging Reliability Index to rank performance of EV manufacturers

Developers of interoperable charge controllers and software for electric vehicle (EV) charging stations EcoG has launched its first-ever Charging Reliability Index (EcoG CRI): an index by which the charging reliability of EVs can be measured and compared.
EcoG launches Charging Reliability Index to rank performance of EV manufacturers
Courtesy of Eren Goldman, Unsplash.

The test suite of the Charging Reliability Index consists of 3 categories:

Reliability of Charging Start

Reliability of Charging Process

User Communication and Prevention of Errors

The first edition of the Index has come back with the following results, the key learnings from which can be summarised as follows:

On average, the tested vehicles only score 68 percent within the EcoG Charging Reliability Index

This mirrors the relatively low charging reliability of, for example, 80 percent in North America that is substantially below the 99.99 percent operational reliability rate that is common in other industries

For example, test on plug locking: 50 percent of EVs do not inform users about avoidable plug locking errors in the charging preparation phase

Another example, test on Control Signal Quality: Two out of ten cars show high damping of the control signals resulting in an unreliable charging process with random interruptions. 

EcoG is calling for all OEMs to participate in the Charging Reliability Index, and will test the reliability of any EV that is put forward for the assessment.

To make the reliability of the EV charging process measurable, the EcoG test team developed the Charging Reliability Index based on their field experiences of technical failures during charging sessions. The index consists of a range of tests that have been implemented to accurately evaluate the charging interface of EVs, measuring how reliably they can initiate a charging session and sustain charging for the required time. The tests also include an analysis of how well charging interfaces communicate errors to the user in an attempt to circumvent charging failures.

For years, “range anxiety” - the concern drivers have around the maximum range of their EVs - presented one of the biggest obstacles to mass EV adoption across the world. The industry has worked relentlessly to alleviate this, offering more range through increased battery capacities and advancements in charging power.

However, in recent years, range anxiety has been replaced by charging anxiety. 6 percent of charging attempts, or 2,000 charging sessions in Germany alone, run into technical failures. According to a study by J.D. Power, at least one in five electric charging attempts fail.

“Questions remain about charging reliability” said Joerg Heuer, EcoG CEO and Co-Founder, and former Professor at the University of Passau. “Will I be able to charge my car when the battery is low? How often will my car fail to charge? These questions have not been addressed by standard charging test procedures, which is why we’ve produced this Index to test the reliability of today’s range of available EVs. Failed sessions occurring even at low rates seriously impact the way EVs are perceived by consumers. Considering the millions of sessions that take place every day across public and private charging stations, the need to track reliability and drive improvements is clear.”

For additional information:


EcoG Charging Reliability Index

Baterías con premio en la gran feria europea del almacenamiento de energía
El jurado de la feria ees (la gran feria europea de las baterías y los sistemas acumuladores de energía) ya ha seleccionado los productos y soluciones innovadoras que aspiran, como finalistas, al gran premio ees 2021. Independientemente de cuál o cuáles sean las candidaturas ganadoras, la sola inclusión en este exquisito grupo VIP constituye todo un éxito para las empresas. A continuación, los diez finalistas 2021 de los ees Award (ees es una de las cuatro ferias que integran el gran evento anual europeo del sector de la energía, The smarter E).