India, August 25, 2025: Bengaluru-based energy tech startup Exponent Energy has unveiled its next-generation charging station, code-named P4, powered by its 15-minute rapid charging technology. With this launch, Exponent sets a new benchmark for EV infrastructure, redefining both design and engineering in India and beyond.
The new charger integrates three key innovations:
Space utilization, unwieldy cables and managing battery temperatures are challenges for EV charging around the world. For its new charger, Exponent set out to solve all these problems through intelligent design and engineering – not only for rapid charging, but for any kind of EV charging. Built in India, for India and the world.
Commenting on the launch, Arun Vinayak, Co-founder & CEO of Exponent Energy , said, “At Exponent everything starts from design thinking. Design is not about aesthetics, but about re-thinking everything from a 1st principles basis to deliver better on Engineering and Economics. We made a conscious decision to launch our earlier charger as an MVP to learn from the field about real-world usage and challenges. We brought all those learnings together in the new charger. Charge time and battery life is what we’re known for today, but our larger vision to deliver a 360 degree simplified energy experience – from how easy it is to fin a charger, to the seamlessness and reliability of the mating experience and to how payments just work. This charger is the first step towards that.”
The charger delivers up to 40 kW of power and is already being deployed in cities across India, to be used by OEM partners such as Murugappa Group’s Montra Electric, Omega Seiki Mobility, and others, accelerating rapid adoption across both passenger and commercial EV segments.
Design Engineering
Exponent Energy is a full-stack energy company, building battery packs, charging stations, and custom charging connectors, enabling 15-minute charging times for EVs of any size. It draws on learnings from its earlier chargers, which were launched as a simpler design to prove rapid-charging technology and gain experience on real-world usage.
The result is the P4 charger, designed to make EV charging as intuitive as fuelling. The sleek, wall-like design frees up valuable real estate, vital in a dense urban environment. The floating cables require minimal effort from the driver to plug in, and retract automatically when unlocked. Built to endure India’s toughest conditions, the connector comes in a full-metal shell, and for coolant uses spring-compressed axial seals similar to LPG and CNG guns, and remains functional even underwater.
Beyond the connector, the P4 integrates offboard battery pre-heating for extreme cold weather performance (added to offboard cooling, which Exponent unveiled in 2023), optimized airflow to minimize fan noise in cities, and a revamped internal layout for long-term reliability at scale. Completing the experience, the Exponent app provides users real-time information on charger location and availability, and the ability to charge seamlessly with a monthly pass, no keycards or manual payments needed at the charger.
Since its inception in 2020, Exponent has come a long way, powering 2,000+ EVs across India, enabling over 8 lakh rapid charging sessions, and covering more than 50 million kilometers. The company has also expanded its footprint to five new cities, Delhi NCR, Chennai, Ahmedabad, Kolkata, and Hyderabad, unlocking EV scalability at a national level. In a first for India, and only the third in the world at the time, Exponent also introduced its 1 MW rapid charging technology for buses in August last year. Furthermore, The World Economic Forum has selected Exponent Energy for its 2025 Technology Pioneers list, which recognized 100 early-stage companies from 28 countries driving innovation across industries.
About Exponent:
Led by Arun Vinayak and Sanjay Byalal, Exponent Energy aims to simplify energy for EVs. The full-stack energy company has built battery packs; charging stations; and a custom charging connector that together unlock a 0 to 100% charge in 15 minutes for EVs with any number of wheels & provide a 3000-cycle life warranty – all while using regular Li-ion cells to make rapid charging truly affordable and scalable. To date, Exponent has raised $44.6 million across Pre-Series A, Series A, and B rounds, backed by international investors including TDK Ventures, Lightspeed, and Eight Roads Ventures; domestic investors YourNest VC, 3one4 Capital, and AdvantEdge VC; and strategic partners such as the Motherson Group and the family office of Dr. Pawan Munjal, Chairman & CEO of Hero MotoCorp.
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