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The Indian Navy had issued a request for information (RFI) in October seeking the development of a “high capacity” lithium-ion battery system. The Navy is interested in replacing current lead-acid batteries with lithium-ion battery packs that not only will space but also offer faster-charging capabilities.

Following up on the submarine modernization program, the Navy recently issued a Request for Proposal (RFP) and soon will be assessing bids, and soon winning bidders will be asked to demonstrate their battery packs in a scaled environment before they are awarded the contract. has been told that Lithium-ion batteries are going to be installed in all of the Kalvari class submarines from 2024-25 onwards.

Japan and South Korea are considered pioneers in lithium-ion batteries for conventional submarines since both countries not only have demonstrated the tech on the submarines but also have been operating them for years now. India will join the elite group of countries when it equips lithium-ion batteries on its Kalvari class submarines.

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