Intending to support India in faster adoption of electric vehicles (EVs) by leveraging entrepreneurial energy of start-up backed by industry leaders, Lithium-ion EV battery maker Grinntech has transformed into a commercial enterprise.

As part of this evolution, the company has attracted industry leaders such as Dr V Sumantran (former Vice- Chairman of Ashok Leyland) and Lakshmi Narayanan (co-founder and former Vice-Chairman of Cognizant) as investors and to serve on the company’s Board of Directors. Besides, K S Manian of Radiance Group and Ucal invested in this company. The company has received about USD2 million from these investors.

Along with a new logo, Grinntech has also unveiled a range of high-tech batteries with unique designs customised to Indian conditions and its proprietary, IoT-enabled BMS to power 2-wheelers, 3-wheelers and tractors/light vehicles.

Grinntech’s journey catalysed with the fundamental truth that the Indian automotive industry’s future is EVs, and India should be self-reliant in EV technologies.

In 2013, Nikhilesh Mishra and Puneet Jain - the two young engineers came together with a passion for making EV industry indigenous. Began with developing the battery swapping model for Tata Ace where interchanging of batteries performed in less than two minutes without any automation, the duo sharpened their focus on 12kW EV conversion kit for the same vehicle. Over 20,000km of field trials conducted to validate the system.

The break-through came with being absorbed at the incubation centre in IIT Madras Research Park in 2017, where they mentored by a leading scientist - Professor Ashok Jhunjhunwala. This period saw the development of lithium-ion batteries for two/three-wheelrs and electric buses. It also gave the company to licence the technology to a few battery manufacturers, including Exide, Amara Raja, Exicom and Cygni. During the last three years, the company generated close to USD1 million, which was ploughed back in research and development. Today, over 80 percent of the staff in the company is involved in its research and development.

After evolving from a pure R & D firm to a manufacturing company, Grinntech is now pushing itself to the operational phase with a modular production system, paying particular attention to cell-characterisation and pack testing. In addition to its new R&D and manufacturing facility in Chennai, the company is exploring a couple of options for a larger manufacturing location to scale up its production capacity.

The new facility will manufacture Robin-72 and Shikhra smart and personalised 2- and 3-wheeler battery solutions using state-of-the-art automated processes and assembly lines. The facility will also manufacture Pintail, an IoT-enabled 2-wheeler starter battery and the Falcon, a larger battery suited to tractors and light vehicles. The modular production layout will allow for easy scaling up as demand grows.

Robin 72 not only provides energy to the vehicle but also makes it smart and personalised. Designed with its patented technology (developed with Qualcomm), it is 7.5 times more capable than an average BMS - battery management system. It makes it most suited for varied EV applications like ride-sharing, delivery services, battery swapping, and personal use vehicles. The battery will last up to five years and it gets up to 80 percent of charge in 40 minutes.

Shikra reduces downtime significantly, thus ensuring better earning opportunities for drivers. Designed with quality materials, it offers segment-best durability, reliability, and longevity. It assures more than 99 percent availability of battery energy. The battery will last for four years and it can get 80 percent of charge in about two hours.

Falcon (96V) is oriented to light-vehicles, including cars, LCVs and light tractors/industrial equipment, and optimised for long-life operation.

Designed, according to JIS standard, Pintail is suitable for IoT enabled petrol 2-wheelers with continuous current draw. The battery offers reliability and life to balance between high current for cranking and long life for the constant current consumption. CAN communication adds smartness and fast charging makes it most suitable for ride-sharing vehicles. The battery can get 80 percent of charge in an hour; it has a life of up to three years.

For all the batteries, the company offers variants with customisable features according to the requirements.

Grinntech works closely with leading global technology companies and cell suppliers, bringing cutting-edge advances in semiconductors, materials, cell-chemistry and formats.”It was always our dream to create a technologically advanced lithium-ion battery product-line built-to-cost for Indian conditions and its production system. We are hopeful that we will catch the fast-growing wave for EV products by Indian customers,” the company founders said.

Mishra said, “When a technology stalwart like Lakshmi Narayanan and a visionary of mobility like Dr Sumantran join hands, I expect nothing less than building up Grinntech’s battery development and manufacturing capabilities to a position of industry leadership. Apart from affordable, high-quality batteries that employ customisable and superior thermal management, we anticipate EV makers and customers will soon require additional capabilities like battery performance analytics and connectivity. With our innovative product range and sophisticated IoT-enabled BMS systems, we are ready for this future.”

Dr Sumantran said, “I am delighted to be a part of Grinntech’s journey when EVs are rapidly gaining acceptance globally and in India, and particularly so at a time when our country has articulated a priority for self-reliance in critical EV technologies. Market conditions will reward those EV battery makers that possess technological and operational competence in the coming years. Grinntech’s combination of performance, quality and economics will play an important part in that journey.”

Narayanan said, “The future of energy is in renewables with significant potential for high growth. Digital technologies such as IoT and data analytics play a crucial role in enabling companies with newer business models to provide much-needed connectedness, high performance and superior customer experience. It is heartening to see start-ups in India boldly embrace technology-driven solutions that can meaningfully address not just India’s challenges but also global ones.”

Off late, Grinntech has been getting inquiries for the supply of batteries to global clients. The anticipated growth of products like E-powered micro-cars, e-bikes, and a range of electrified mobility vehicles in the post-COVID world offers encouraging prospects for companies like Grinntech that possess proprietary technology, a low-cost base, and high-quality products. MT

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Researchers at Chalmers University of Technology, in collaboration with industry partners, have published a study in Nature Communications demonstrating that reconfigurable battery pack architectures can extend electric vehicle battery operational life by more than 20 percent under specific conditions.

In conventional electric vehicle battery packs, cells are wired in a fixed series configuration, meaning the weakest cell dictates the overall capacity, performance and lifespan of the entire pack. The architecture evaluated by the Chalmers engineering team uses integrated electronic switches and a centralised battery management system to monitor individual cells or cell groups. When a cell experiences accelerated degradation or reduced capacity, the system bypasses the degraded unit while electric current continues to flow through the remaining functional cells.

Albert Skegro, a PhD student at the Department of Electrical Engineering at Chalmers University of Technology, said, "They must all move at the pace of the slowest person and stop when that person stops, regardless of how much energy the others have left. With the architecture we have modelled, the battery can instead bypass the cell that is causing problems and continue using the remaining cells."

Changfu Zou, Professor at the Department of Electrical Engineering at Chalmers, said, "Reconfiguration is not an on-or-off choice. It is a spectrum. Where a manufacturer chooses to position itself on that spectrum determines how much of the potential benefit can be realised."

In a representative modelling scenario featuring an 80 kWh battery pack driven 12,000 kilometres annually over an 18.8-year vehicle lifespan, the reconfigurable system deferred battery replacement by approximately 14 months. The researchers noted that the technology yields the highest performance gains in high-voltage vehicles, including 400-volt and 800-volt electric passenger cars and commercial trucks, where higher cell counts in series increase the statistical probability of individual cell variance.

A techno-economic analysis included in the study determined that implementing cell-level switching hardware increases initial pack production costs by approximately nine per cent based on prototype-scale volumes of 1,000 units. The researchers identified an economic break-even threshold at a 12 percent cost increase, noting that volume manufacturing would lower component costs and increase financial viability for fleet operators and private owners. While prototype applications such as Volvo Cars' SmartCell concept and experimental road vehicles exist, mass-production vehicles using reconfigurable battery packs are yet to enter the commercial market.

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Jakson Green Vehicles has selected Dassault Systèmes’ cloud-based 3DEXPERIENCE platform to manage the design and development of its electric vehicles.

The implementation establishes a collaborative engineering framework to maintain digital continuity across the product development lifecycle. By connecting internal teams and external suppliers, the platform automates workflows, standardises component libraries and manages engineering change requests during early-stage product design. Virtual twin capabilities allow the vehicle manufacturer to conduct virtual validation testing to resolve structural and systems design issues prior to physical manufacturing.

Deepak Thakur, CEO, Jakson Green Vehicles, said, "Using Dassault Systèmes’ 3DEXPERIENCE Platform enables us to apply a collaborative approach and re-engineer our product lifecycle from the ground up. Through this transition from legacy environments to a unified digital thread, it enables strong R&D to achieve twin objectives; accelerated time-to-market and mitigated development costs. This partnership is helping us to transform the early-stage innovation and product design processes."

Deepak NG, Managing Director – India, Dassault Systèmes, said, "As India continues its dynamic growth trajectory, virtual twin technology serves as a powerful catalyst for sustainable innovation, empowering industries to rethink how they design, produce and operate."

The software adoption forms part of Jakson Green Vehicles' plan to build urban zero-emission mobility vehicles and infrastructure across India.

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UK-headquartered energy technology company Gelion has entered into a material transfer agreement with a top 15 global automotive original equipment manufacturer to assess its NES cathode platform for future electric vehicle battery applications.

Under the terms of the agreement, Gelion will supply its sulfur-based cathode active material, coated cathodes and liquid electrolyte to the automotive partner. The manufacturer will evaluate the platform in both liquid and solid electrolyte cell configurations, testing compatibility across lithium metal and graphitic anode pathways targeting luxury and mass-market vehicle applications. The technology is designed to serve as a drop-in cathode material capable of integration into existing battery manufacturing lines without re-tooling.

Matt Wood, Chief Executive Officer, Gelion, said, "Our priority markets are commercial & defence drones, EVs and devices. We are honoured to be working with these major global automotive OEMs, and today’s announcement marks further progress towards the adoption of our technology and the generation of commercial revenues via funded programmes and eventually license and royalty revenue in the global EV market, alongside some of the industry’s leading companies."

"The growing engagement from global EV manufacturers reinforces the potential and attractiveness of our NES™ technology. This momentum is also mirrored in our agreements and partnerships across drones and devices, while our work with Tier 1 materials suppliers is advancing the scale-up of our unique, patented battery materials," Wood added.

The agreement expands Gelion’s ongoing industry testing programs with automotive manufacturers, extending the assessment of its sulfur-based cathode platform across liquid and solid battery systems.

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Honda R&D, a subsidiary of Honda Motor Co., has developed underlying technology for a magnetic coupling wireless power transfer road system in partnership with Taisei Corporation and Taisei Rotec Corporation.

The system enables wireless in-motion charging for electric vehicles, including passenger cars and heavy commercial fleets. The partners plan to initiate demonstration testing on public roads starting in FY2027.

The technology integrates high-power-density receiver and transmitter units from Honda with a high-response direct current power supply system from Taisei and road-embedding construction techniques from Taisei Rotec. By supplying power to electric vehicles while in motion, dynamic wireless power transfer reduces the need for stationary charging infrastructure. The initial commercial focus targets logistics and transport operations, where continuous operation offers economic benefits.

The ground assembly embedded in the roadway combines the inverter and coil into a single unit designed to connect via direct current distribution. This design reduces component counts, simplifies wiring and supports installation into existing road surfaces through standard milling methods. The road pavement structures are engineered to withstand continuous traffic loads from vehicles weighing up to 20 tonnes (20,000kg).

Testing conducted at Taisei Group’s T-FIELD facility in Satte verified system stability and structural durability. Starting in late 2026, the companies will build a test roadway at T-FIELD Tamura to evaluate long-term durability under one million wheel-load cycles, measure power transfer efficiency at outputs up to 150 kW and analyse electromagnetic shielding.

The partnership will also join the Tateyama Expressway demonstration project managed by East Nippon Expressway Company starting in 2027.

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