Grinntech is a bootstrapped lithium battery technology company, working at the forefront of electric vehicle revolution in India. Grinntech develops battery pack's electro-mechanical assembly and battery management system technologies for stationary and automotive applications. Major battery manufacturers, accounting for 85% of Indian battery market share and more than USD 5 billion in market cap, are Grinntech's licensee for electric vehicle and grid storage battery technologies.

Grinntech presently operates out of IIT Madras, under technology development partnership with Center of Battery Engineering and Electric Vehicles, IIT Madras.