New Delhi, Sept. 9 -- Five years after talks of electric vehicle (EV) battery manufacturing began in India, manufacturers are finalizing their chemistry choices-a crucial factor for future gigafactories.

According to the companies' disclosures and presentations to suppliers, Reliance Industries and JSW are betting on lithium iron phosphate (LFP) cells, while Tata Agratas, Ola Electric, and Amara Raja are starting with nickel manganese cobalt (NMC) technology.

Exide Industries, which is working with China's Svolt, will do both. Experts said such dual-chemistry factories may soon become the norm.

LFP is known for its high durability, safety and is relatively cheap. It is widely used by Chinese firms such as BYD and Geely, and Indian manu...