Lithium-ion cells and batteries are the invisible power source behind nearly all of modern electronics — phones, laptops, power banks, wearables, wireless earbuds, tools, and countless other devices depend on them. They store a remarkable amount of energy in a small, light package, and that very energy density is what makes their safety critical: a poorly made or abused lithium cell can overheat, vent, or catch fire. To ensure that the cells and batteries entering the Indian market are safe, sealed secondary lithium-ion cells and batteries are notified under the BIS Compulsory Registration Scheme (CRS). A covered cell or battery must be registered before it can be imported or sold in India, making BIS CRS registration the mandatory gateway for battery makers and importers. Batteries are a foundational component category — they feed into the compliance of every downstream device that uses them — and they carry their own environmental obligations under India’s battery-waste rules. This guide focuses on the CRS registration of lithium cells and batteries: the applicable standard, the process, documents, and timeline, and the way it connects to the wider battery-compliance picture. Why Lithium Cells and Batteries Fall Under CRS The Compulsory Registration Scheme operates under the Electronics and Information Technology Goods (Requirement of Compulsory Registration) Order, administered by BIS under the BIS Act, 2016. Sealed secondary (rechargeable) lithium-ion cells and batteries used in portable applications are notified under CRS, meaning a covered cell or battery must be tested against the applicable Indian Standard, registered with BIS, and marked with its registration number before it can be manufactured, imported, sold, distributed, or stored for sale in India. The safety rationale is fundamental. A lithium cell concentrates a large amount of chemical energy that, if released uncontrollably through a defect, contamination, or abuse, produces thermal runaway — rapid, self-sustaining overheating that leads to venting and fire. Because these cells power so many products and are produced in staggering volumes, ensuring each meets a common safety baseline is essential. CRS provides that baseline through India-specific testing. Selling an unregistered notified cell or battery is an offence under the BIS Act, and registration is also central to the compliance of every device that uses the cell. The Applicable Standard Lithium cells and batteries are registered under the Indian Standard for the safety of secondary lithium cells and batteries for portable applications, principally IS 16046, India’s adoption of the international standard IEC 62133. The standard is structured to address both cells and the batteries assembled from them, with the relevant part applied accordingly, and it specifies the safety requirements and tests that verify a cell or battery behaves safely under normal use and reasonably foreseeable misuse. Manufacturers should confirm the exact applicable part and current edition of IS 16046 for their specific product — cell or battery pack — against the latest BIS notification before testing, since registering against a superseded standard can invalidate the application. Because battery standards and requirements evolve as the technology and its risks are better understood, staying current is especially important in this category. What the CRS Safety Test Examines Understanding what the laboratory checks clarifies why registration is so important for batteries. The safety standard subjects the cell or battery to a battery of tests designed around the ways lithium cells fail. Electrical-abuse tests include overcharge, over-discharge, external short circuit, and forced discharge, verifying that the cell and its protection respond safely rather than entering thermal runaway. Thermal tests expose the cell to elevated temperatures and thermal cycling to confirm it remains stable. Mechanical-abuse tests such as crush, impact, and vibration check that physical stress does not cause a dangerous failure. For batteries, the behaviour of the protection circuitry and the interaction between cells are also examined. The whole point is to confirm that the cell manages its stored energy safely across the abuse conditions of real-world use and mishandling — which is precisely why India requires this testing rather than relying on overseas certificates alone. Batteries as a Foundational Component Lithium cells and batteries occupy a special position because they are rarely the end product — they are a component that powers other products, from power banks and wearables to laptops and tools. This has an important compliance consequence: the safety of the cell propagates directly into the safety of every device built around it. A downstream device manufacturer relies on the cell being safe and, in many cases, on its being properly registered, so a battery maker’s certification is an enabler for a whole chain of products. It also means that battery makers serve two kinds of customers — those buying cells and packs directly, and the device manufacturers who need conforming cells to certify their own products. For a battery manufacturer or importer, this makes credible, current CRS registration and safety documentation not just a legal requirement but a core part of the commercial offer, since serious device makers will insist on it before designing a cell into their products. Step-by-Step: BIS CRS Registration for a Lithium Cell or Battery CRS is a test-and-register scheme with no factory inspection. Our team manages each stage end to end, but every applicant should understand the sequence. Documents Required A complete file at the outset is the biggest single lever on approval speed. You will typically need: Foreign manufacturers hold the CRS registration in their own name and must appoint an AIR resident in India; the importer relies on that registration. Timeline and Cost Planning A realistic CRS schedule for a lithium cell or battery is commonly a few weeks to a couple of months end to end, with laboratory testing the pacing item — and the extensive abuse-testing suite means testing can take longer than for many other products. Once a complete application with a valid test report is filed, BIS scrutiny and grant are relatively quick. Costs are dominated by laboratory testing fees, followed by BIS application and registration fees and, for foreign makers, the AIR arrangement. Because a manufacturer often makes