Technical Knowledge
What is the difference between passive and active cell balancing in a BMS?
Last Updated: April 4, 2026Cell balancing is one of the most critical functions of a Battery Management System (BMS). In a multi-cell battery pack, individual cells naturally develop small differences in State of Charge over time due to manufacturing variations and aging. Balancing corrects this. Battery technology is the most critical and rapidly evolving domain within the electric vehicle...
What is solid-state battery technology and does it change EV career paths?
Last Updated: April 4, 2026Solid-state batteries are considered the next major breakthrough in EV battery technology — replacing the liquid electrolyte in current lithium-ion cells with a solid electrolyte. This promises higher energy density, better safety, and longer cycle life. Battery technology is the most critical and rapidly evolving domain within the electric vehicle industry. In India, as domestic...
What is the EV charging protocol OCPP and why should infrastructure engineers know it?
Last Updated: April 4, 2026OCPP (Open Charge Point Protocol) is the global standard communication protocol between EV charging stations (hardware) and Charge Point Management Systems (CSMS — the software that manages them). It is to EV charging what HTTP is to the internet. EV charging infrastructure is one of the fastest-growing segments of India’s EV ecosystem, with the government...
What is the difference between Level 1, Level 2, and Level 3 EV charging?
Last Updated: April 4, 2026EV charging is classified into three levels based on power delivery capacity. Understanding the difference is essential for anyone in EV service, infrastructure, or sales roles. EV charging infrastructure is one of the fastest-growing segments of India’s EV ecosystem, with the government targeting a network of over 46,000 charging stations under the FAME II and...
What is the difference between EV range and efficiency and why do engineers focus on both?
Last Updated: April 4, 2026Range and efficiency are related but distinct metrics in EV engineering. Understanding the difference is important for engineers working on vehicle development, and for anyone communicating EV value propositions to customers. Deep technical understanding of EV systems is what differentiates job-ready candidates from those with surface-level awareness. In technical interviews at leading EV companies in...
What is the difference between a hybrid vehicle and a pure electric vehicle for career planning?
Last Updated: April 4, 2026Hybrid and pure electric vehicles represent distinct technology platforms with different engineering requirements. Understanding the difference helps you choose the right specialization direction. Deep technical understanding of EV systems is what differentiates job-ready candidates from those with surface-level awareness. In technical interviews at leading EV companies in India, including Tata Motors, Ola Electric, Ather Energy,...
What is the role of AI and machine learning in the EV industry?
Last Updated: April 4, 2026Artificial Intelligence and Machine Learning are becoming core technologies in the EV sector — not just for software products but embedded in the vehicle hardware itself. Deep technical understanding of EV systems is what differentiates job-ready candidates from those with surface-level awareness. In technical interviews at leading EV companies in India, including Tata Motors, Ola...
What is ADAS and how does it relate to EV careers?
Last Updated: April 4, 2026ADAS (Advanced Driver Assistance Systems) is a set of technologies that assist drivers and form the foundation of autonomous vehicle development. While ADAS is not exclusive to EVs, the two technologies are converging — most new EV platforms integrate ADAS as standard, particularly in the four-wheeler segment. Deep technical understanding of EV systems is what...
What is the difference between electric two-wheelers, three-wheelers, and four-wheelers in terms of technology complexity?
Last Updated: April 4, 2026Understanding the technology complexity gradient helps you make informed decisions about which EV segment to specialize in, especially if you are entering the industry fresh. Deep technical understanding of EV systems is what differentiates job-ready candidates from those with surface-level awareness. In technical interviews at leading EV companies in India, including Tata Motors, Ola Electric,...
What is Vehicle-to-Grid (V2G) technology and does it create jobs?
Last Updated: April 4, 2026Vehicle-to-Grid (V2G) is a technology that allows electric vehicles to not only draw power from the grid but also send stored energy back to the grid or home (V2H). This makes EVs a distributed energy storage asset — fundamentally changing how we think about energy infrastructure. Deep technical understanding of EV systems is what differentiates...
How does an electric motor work in an EV and what types are used?
Last Updated: April 4, 2026The electric motor in an EV converts electrical energy from the battery into mechanical energy (rotation) to drive the wheels. Unlike ICE engines, electric motors are remarkably efficient — converting 85-95% of electrical energy to mechanical output, versus 25-35% for combustion engines. The electric powertrain is fundamentally different from conventional ICE drivetrains, and understanding these...
What is CAN bus and why do EV engineers need to know it?
Last Updated: April 4, 2026CAN (Controller Area Network) bus is the primary communication protocol used between electronic control units (ECUs) in automotive vehicles, including EVs. It was developed by Bosch and has been the industry standard since the 1990s. Deep technical understanding of EV systems is what differentiates job-ready candidates from those with surface-level awareness. In technical interviews at...
What is thermal runaway in an EV battery and how is it prevented?
Last Updated: April 4, 2026Thermal runaway is the most dangerous failure mode in lithium-ion battery systems and the primary reason EV battery fires are so difficult to extinguish. Understanding it is essential for anyone working in EV battery engineering or service. Battery technology is the most critical and rapidly evolving domain within the electric vehicle industry. In India, as...
What is the difference between AC and DC charging for EVs?
Last Updated: April 4, 2026EV charging can be broadly classified into AC (Alternating Current) charging and DC (Direct Current) fast charging. Understanding the difference is essential for anyone working in EV service, charging infrastructure, or powertrain engineering. EV charging infrastructure is one of the fastest-growing segments of India’s EV ecosystem, with the government targeting a network of over 46,000...
What is a Battery Management System (BMS) and why is it important?
Last Updated: April 4, 2026The Battery Management System (BMS) is the electronic system that monitors and manages a lithium-ion battery pack in an electric vehicle. It is often called the brain of the EV because without a functioning BMS, the battery pack cannot operate safely or efficiently. Battery technology is the most critical and rapidly evolving domain within the...
What is regenerative braking and how does it work?
Last Updated: April 4, 2026Regenerative braking is one of the key energy efficiency features of electric vehicles. Unlike conventional friction braking that wastes kinetic energy as heat, regenerative braking converts kinetic energy back into electrical energy and stores it in the battery. Deep technical understanding of EV systems is what differentiates job-ready candidates from those with surface-level awareness. In...
What is EV battery chemistry and why does it matter for a career?
Last Updated: April 4, 2026Battery chemistry is the foundational science behind every electric vehicle. Understanding it is essential for any engineer working with batteries — from cell-level design to system-level BMS development. Battery technology is the most critical and rapidly evolving domain within the electric vehicle industry. In India, as domestic cell manufacturing scales under the PLI scheme and...
