Inside Octarange Technologies’ Battery Platform

Founded by Siddhesh Gosavi and Gaurav Rane in May 2022, the Pune-based start-up has developed and commercialised proprietary battery technology to meet fleet battery requirements with fast charging and liquid-based thermal management. This interview discusses their technology stack and business model.

Which aspects of lithium-ion battery technology does Octarange focus on?

Through our full-stack battery technology platform, Octarange focuses on building fast charged and fireproof batteries. Our solution, featuring modular battery management, liquid based thermal management, and a digital battery twin, is designed for seamless battery integration across automotive, stationary storage, and industrial applications.

What is the range of battery solutions offered by Octarange?

Our tech stack supports all lithium-based chemistries, mainly LFP, NMC, NCA, LTO, and LFMP.

Octarange BMS comprises a Module Monitoring Board, Pack Monitoring Board, and Power Distribution Unit with three levels of protection on cell, module, and pack levels.

• With this decentralized approach, we are building battery packs with nominal voltages from 12V up to 1500V DC.

• For E-2W fleet operations, we have standardized a fast-charge-enabled 2kWh battery pack.

• For stationary storage, we have standardized a 5kWh battery module assembled into an ESS rack with capacities ranging from 30kWh to 200kWh.

Apart from these standardized batteries, most of our battery deployments are custom-made, where we design and build batteries to meet specific requirements.

Before launching Octarange, co-founders Siddhesh and Gaurav jointly ran Greenspin, a company specializing in design and manufacturing services for the EV segment. Their extensive work on Electric vehicles during their Greenspin days led them to identify significant technological, product, and infrastructure bottlenecks in the battery space.

What are the different types of battery thermal management systems?

Battery overheating severely impacts battery health and increases the risk of fire hazards. Conversely, operating batteries at extremely low temperatures without proper thermal management can be equally damaging. Our liquid-based thermal management system ensures that battery cells remain within safe temperature limits, in extreme ambient temperatures and even during fast charging operations. In liquid cooling, we offer two types of thermal management systems:

1. Immersion-based direct cooling system wherein circulation of dielectric coolant across the cells takes place.

2. Water-ethylene based indirect cooling system

Water-ethylene glycol is circulated through a cold plate which is in contact with the cells.

Globally, water ethylene-based battery thermal management is widely used by major Auto OEMs owing to its cost-effectiveness as compared to immersion-based liquid cooling systems. At Octarange, we do a prior technical assessment of the heat load profile before deciding on the type of thermal management system to be used for the battery pack.

Can you elaborate on these thermal management solutions and help us understand how you compare to other providers in the market?

• Water-ethylene-based cooling systems – The cold plate is a critical heat exchanger featuring internal pathways that allow coolant circulation while maintaining direct contact with the cells for efficient heat dissipation. Traditional manufacturing methods for cold plates, such as stamping and extrusion, are highly capital-intensive due to expensive tooling costs.

Octarange’s fusion-bonded process eliminates the need for tooling, enabling the production of automotive-grade cold plates with greater efficiency and cost-effectiveness.

• Immersion-cooled battery packs – Our battery casing integrated with heat exchangers enable rapid heat transfer from cells to the casing, keeping the battery temperature in control.

Other aspects of liquid-cooled thermal management include the selection and sizing of pumps, fans, automotive hoses, connectors, etc.

Presently, in India, liquid-cooled batteries are still at a nascent stage in terms of market penetration, but the industry is steadily moving in that direction. With the increasing demand for fast charging, extended battery life, and thermal stability in high-temperature conditions, liquid cooling is poised to become the mainstream solution.

Can you tell us about the IP created by Octarange so far?

Our IP portfolio comprises four utility patents with multiple novelties in battery mechanical design, electronics and thermal management.

• Fireproofing of the batteries through a novel arrangement of modular cell holders with liquid cooling, miniaturization of heat exchangers, and stackable arrangement of battery modules, which are integrated with cell-module-pack level protection circuits, are some of the core highlights of these patents.

• Our process patent for Octarange’s fusion bonded technology for high-performance cold plate manufacturing was granted in India at the start of this year and is getting commercialized across the battery industry via a licensing model.

What is the current business model and scale of operations for Octrange?

Our business models are comprised of direct product sales and technology licensing.

• In the direct product sale model, we supply batteries, battery management systems, and liquid-based thermal management systems as per the client’s requirement.

• Our licensing model best suits established battery manufacturers or those venturing into the battery manufacturing business. Octarange grants battery manufacturers access to its technology and products and manages the entire technology backend. This enables battery manufacturers to focus on the production process, streamline operations and accelerate sales while eliminating the complexities of battery R&D and technological development.

Scale of Operations – Our 8-member team, based in Pune, operates a manufacturing facility with an annual battery production capacity of 50MWh. Our existing manufacturing infrastructure produces 150 fusion-bonded cold plates monthly. For BMS product sales, we are currently catering to batch orders of up to 40-50 units per month from EPC contractors for high-voltage batteries in stationary storage for grid and solar backup applications.

We understand your focus remains on providing battery solutions for fleet operations. What’s the reason behind this alignment?

Fleet battery usage is among the most demanding from an operational standpoint, and we are excited to tackle these challenges head-on while establishing our batteries as the go-to choice in this segment. Fast charging is the need of the hour, especially in fleet operations.

Octarange batteries are charged within 20 minutes, and the rider can go for a 50-60 km delivery ride.

With this intermittent boost charging, riders cover 150 km daily travel and need not wait to charge their batteries for 3-4 hours.

Having completed our AIS 156 compliances on a low-voltage battery pack of 60V, our go-to Market is e-2Ws and e-3Ws, wherein we see successful deployments of at least 2,500 Octarange batteries within the next four months.

What kind of clients are you working with at the moment?

Our clientele includes fleet operators, battery manufacturers, vehicle OEMs, equipment manufacturers, and EPC contractors for stationary storage batteries.

• In the fleet segment, we cater to operators managing batches of around 50 e-2Ws and e-3Ws for warehouse deliveries at JioMart Kondhwa and Amazon Warehouse Mundhwa, Pune.

• As a battery R&D development partner to Ivoomi, we have deployed and tested the majority of our fleet batteries in their vehicles.

• Our thermal tech stack—featuring fusion-bonded cold plates, radiator units, and chiller units—is supplied to major OEMs and pioneering tech startups, including Ashok Leyland, Ultraviolette Automotive, and The Eplane Company.

Have you raised any investments to date?

Octarange has been bootstrapped to date, with our battery technology development primarily funded by the founders, along with Deep Tech Development Grants and Startup India Grants.

With a solid technological foundation in place, we are now seeking strategic investments and collaborations to accelerate R&D and rapidly scale our manufacturing facility.

This interview was first published in EVreporter April 2025 magazine.

Also read: Powering the future: Why India must localise EV battery production