EVC Research & Development

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Category: Renault

Renault Zoe Q210 – Inevitable EMI Charger failure

By Strom Trooper

Unstable grid conditions are the most common cause of OBC failure, especially on the Renault ZOE with the Q drive system. A case from Serbia a few months ago remained unresolved because an explosion destroyed a significant part of the EMI filter PCB. At the time, we assumed it was an isolated incident. However, another…

Renault Twizy – BMS Defect

By Strom Trooper

Electric mopeds, there is no more logical and sustainable way of transportation. Small battery, low weight, minimal consumption, simple system, cheap to charge and cheap to move. The Renault Twizy, a veteran and one of the favorite “buzz boilers”. Suddenly stopped, the cause unknown, diagnosis for a couple of days and in the end, we…

R240 Powertrain – Renault worst EV project!

By Strom Trooper

Renault Zoe, Twingo, and Smart 453 share Renault-designed propulsion systems that have proven efficient but unreliable. The motor is air-cooled by intake air behind the vehicle, and the bearings suffer from probable overheating. Service for these electric motors is required approximately every 100,000 km; this is the seventh one coming to us due to grinding…

Renault Zoe – R240 milling sound

By Strom Trooper

R240 is a newer generation drivetrain that many of us have been eagerly awaiting outside of the warranty period to see what fails on the air-cooled electric motor and the transmission differential. Two years ago, we received the first call from Varaždin regarding an EQ 453 Čmart, reporting that the motor had started milling and…

And finally… Renault Zoe 2014 Q210

By Strom Trooper

Previously, who missed the fact that certain renowned manufacturers from 2020 have electric motors already at 30,000 km and they are not under warranty, here we have a completely different example where a Renault Zoe with a 22kwh battery, 10 years old, outside of all warranties with a defect in the electric motor, believe it…

Renault Twizy – Buzzer with style

By Strom Trooper

A small city EV conqueror came with a charge error and 5% SOC. The owner tried to replace the Onboard charger (new), but it still does not charge. After a little deeper analysis and advice from colleagues from France, the suspicion shifted to a possible defect in the battery. We open this 52V battery pack…