Electric Bus blue charging

Streamlining e-bus warranty discussions

The automotive sector’s transition to green mobility is challenging the bus operators across the world. That was the case of a major operator of electric buses in the Netherlands, who reached out to ViriCiti and TWAICE regarding our Battery Health Solution to integrate data-driven decision making focused on batteries, to avoid timely and costly warranty discussions.

Download the content
TWAICE / Jan 20, 2022
No items found.


TWAICE helped me to learn more about: Streamlining e-bus warranty discussions read article here:



Saving time, money and effort in electric bus warranty discussions


A lot has happened in the world of electric buses over the past year. Many new projects have been announced or started, and we have seen a great push from regulators and municipalities to commit to ambitious emission-free transport goals.

However, the early adopters – those that started introducing electric buses into their fleets four or five years ago – can offer helpful insights to the future for many. They present first learnings on challenges, complications and solutions when it comes to questions on strategic renewal of the fleets, maintenance or warranty discussions.

Over the past couple of months, ViriCiti and TWAICE have worked closely with such an early adopter on how to integrate data-driven decision making – focusing on batteries – to avoid timely and costly warranty discussions.


A major operator of electric buses in Europe, more specifically in the Netherlands, reached out to ViriCiti and TWAICE regarding our Battery Health Solution. The operator in question is an early adopter of e-buses. They started to add these to their fleet in 2014 and had more than 100 electric buses by 2017. For a considerable number of buses, the five-year warranty period given by the OEM was about to expire. This raised several operational and strategic questions for the operator.

The initial question, “What is the status of (each) battery actually?”, was the most pressing. This brought more questions with it:

  • How do we get the SoH (State of Health) data? What are the concrete warranty terms for the specific buses?
  • Were the assumptions made at the time of the purchasing decision valid?
  • What is the aging behavior across the sub-fleet; did some buses age faster than others?
  • What is the aging performance of buses from other OEMs; can a comparison between buses be made?
  • What are the strategic and operational implications of the outcome? What are the lessons learned and how to incorporate them in the future?

As these questions were arising for the first time – on both the operator’s and likely the OEM’s side – no standard processes had been defined, which resulted in several challenges.

The whitepaper thoroughly explains these challenges and describes how battery analytics can help.

Download the complete whitepaper here:

Related Resources

Improving BESS performance, availability and safety
January 9, 2024

Improve the safety, availability and performance of your battery energy storage systems

Battery energy storage systems (known as BESS or ESS) are essential for accelerating the shift towards green energy. They are now an integral part of the electricity grid across the globe, meaning that their safety, availability and performance is more important than ever.
EV safety
September 27, 2023

Safeguard electric vehicle fleets with battery analytics

There are a complex variety of causes of reliability and safety problems with electric vehicle batteries. In this whitepaper, we explore EV battery safety and reliability concerns, potential causes of issues, and how battery analytics can help overcome these challenges.
TWAICE battery lab
August 17, 2023

A new generation of aging models for lithium-ion batteries

The latest version of the TWAICE simulation model, Version 9, introduces the first steps towards a new generation of battery simulation models: The physics-motivated semi-empirical aging models.