When it comes to lithium-ion batteries, safety and quality are non-negotiable. In India, the Bureau of Indian Standards , BIS certification is mandatory for lithium-ion battery cells and packs under the Compulsory Registration Scheme (CRS). If you’re an importer, manufacturer, or startup in the battery space, understanding the BIS process can make or break your market entry.

In this post, we’ll break down:

• The step-by-step process to get BIS certification for lithium-ion batteries,
• The key documents and testing procedures you’ll need,
• Expected timelines, and
• The benefits of getting certified.

What is BIS Certification and Why Does It Matter?

BIS certification ensures that products meet Indian safety and quality standards. For lithium-ion batteries, this means compliance with IS 16046 (Part 1 & 2): 2018, which aligns with IEC 62133 standards for rechargeable battery cells and packs.

Without BIS certification:

• Your products can’t be legally sold in India.
• Non-compliance can result in heavy penalties, confiscation, or legal action.
• Retailers and end-users won’t trust your brand.

In short, Bureau of Indian Standards certification is your license to operate and compete legally and credibly in the Indian market.

Step-By-Step Process for Obtaining BIS Certification

Let’s break down the process into actionable steps:

✅ Step 1: Understand Applicable Standards — The Foundation for BIS Success

Before you even think about testing or submitting paperwork, you must understand which BIS standard applies to your lithium-ion battery product. This is the most crucial first step — and surprisingly, it’s where many manufacturers and importers trip up.

Why Standards Matter

The BIS (Bureau of Indian Standards) doesn’t just issue random approvals. It certifies that your product conforms to a specific Indian Standard (IS), which defines the safety, performance, and reliability criteria it must meet.

For lithium-ion batteries, the key standard is:

• IS 16046: Part 1 & Part 2 (2018), which is harmonized with IEC 62133, the international benchmark for secondary cells and batteries containing alkaline or other non-acid electrolytes.

What Exactly Does IS 16046 Cover?

Here’s the breakdown:

• IS 16046 (Part 1): 2018 — Secondary cells and batteries containing alkaline or other non-acid electrolytes – Safety requirements for portable sealed secondary cells, and for batteries made from them, for use in portable applications.
  ✅ Use this for certifying lithium-ion cells.
• IS 16046 (Part 2): 2018 — Safety requirements for lithium-ion battery packs assembled using certified cells.
  ✅ Use this for certifying battery packs or modules.

Real-World Example

✅ If you import or make 18650 or 21700 cylindrical cells, you certify the cells under IS 16046 Part 1.
✅ If you assemble these cells into a battery pack (say, for an electric scooter or energy storage system), you must certify the battery pack under IS 16046 Part 2, even if the cells are already BIS-certified.

Key Point:
👉 Certifying cells doesn’t automatically cover the pack — each level needs separate testing and registration.

Don’t Confuse Battery Types

Not all lithium-ion chemistries are covered under the same scope. The standard generally covers:

• Lithium-ion rechargeable cells: LFP (LiFePO4), NMC, NCA, etc.
• Battery packs made of these cells.

However, lithium metal primary batteries (like button cells) or unusual chemistries may have different or additional requirements.

Why This Step is Crucial

📌 If you choose the wrong standard, your testing lab may run incorrect tests, leading to test failures, wasted costs, and application rejections.

📌 Customs clearance can also be a nightmare if your product’s Standard Mark doesn’t align with the correct standard.

📌 You’ll be better prepared to explain your product in detail to BIS inspectors and labs — and avoid embarrassing or costly missteps.

✅ Quick Checklist for Step 1

✔️ Identify your product: Is it a cell, module, or pack?
✔️ Match it to the right standard (IS 16046 Part 1 or Part 2).
✔️ Read the standard (or get expert help) to know the tests and safety requirements.
✔️ Make sure your product design, materials, and manufacturing processes align with the standard BEFORE sending samples for testing.

🔍 Pro Tip

If you’re unsure, consult a BIS-approved testing laboratory or an experienced local certification consultant. A small upfront investment here can save you months of delays and thousands in retesting costs.

✅ Step 2: Appoint an Authorized Indian Representative (AIR)

If you’re an overseas manufacturer, you must appoint an Authorized Indian Representative to liaise with BIS on your behalf.

Why it’s important: Without an AIR, foreign brands can’t apply for registration. The AIR is your local bridge for communication, document submission, and compliance.

✅ Step 3: Prepare Required Documents

The BIS process is documentation-heavy. Typical documents include:

📌 Application form (Form VI under CRS)
📌 Manufacturing license and factory registration proof
📌 Authorized Indian Representative (AIR) nomination letter
📌 Product datasheets and circuit diagrams
📌 Factory layout and process flow chart
📌 Quality control plan and test reports (if any prior)
📌 Trademark registration certificate (if using a brand name)
📌 Undertaking and declaration forms

Why it’s important: Missing or inaccurate documents are the #1 reason for application rejections.

✅ Step 4: Product Sample Testing

Products must be tested at BIS-recognized labs in India. Here’s what happens:

1️⃣ Send your samples to the BIS-approved lab.
2️⃣ The lab conducts safety, performance, and quality tests as per IS 16046 standards.
3️⃣ The lab issues a test report valid for 90 days.

Common tests include:

• Electrical tests (overcharge, over-discharge, short circuit)
• Mechanical tests (vibration, impact)
• Thermal tests
• External short circuit and forced discharge tests

Why it’s important: Tests validate that your batteries won’t fail in real-life conditions. This is crucial for EVs, consumer electronics, and energy storage.

✅ Step 5: File the Online Application

Once you have the test reports, file your online application through the BIS portal. Attach all documents, including the test report.

Pay the application and registration fee online.

Why it’s important: Delays at this stage add weeks to your timeline if the submission is incomplete or incorrect.

✅ Step 6: BIS Assessment & Grant of License

BIS officers review your application. If they find gaps, they may request clarifications or additional documents.

If everything is in order:
✅ The BIS issues a Registration Certificate (RC).
✅ The RC is valid for 2 years and must be renewed before expiry.

Why it’s important: Only after you get the RC can you legally affix the BIS Standard Mark on your battery cells or packs.

Typical Timelines for BIS Certification

Here’s a rough timeline:

• Document Preparation: 1–2 weeks
• Sample Testing: 3–5 weeks
• Application Review: 2–3 weeks
• Total Time: 6–10 weeks (if all goes well!)

Delays often happen due to:

• Missing documents
• Test failures
• Non-compliance with IS standards
• High lab workloads

Benefits of BIS Certification for Lithium-Ion Batteries

Let’s not forget why this process is worth it:

✅ Ensures Product Safety: Prevents overheating, fires, or explosions—protects end-users and your brand.

✅ Builds Consumer Confidence: BIS-marked products are trusted by distributors and buyers. It shows your batteries meet India’s strictest standards.

✅ Legal Compliance: Avoids penalties, seizures, or customs rejections.

✅ Market Competitiveness: BIS certification is a market differentiator. Buyers prefer certified suppliers.

✅ Unlocks Partnerships: Many B2B clients and government tenders mandate BIS-certified products.

Pro Tips for a Smooth BIS Process

✔️ Partner with an experienced local consultant or lab.
✔️ Plan extra samples—tests can damage units.
✔️ Keep your documents updated.
✔️ Stay on top of BIS amendments. Standards may change!
✔️ Never skip quality control. BIS can conduct factory audits.

Final Thoughts

Navigating the BIS certification process for lithium-ion batteries in India may feel daunting, but the payoff is clear: safer products, legal compliance, and a competitive edge in one of the world’s fastest-growing battery markets.

If you’re ready to get Bureau of Indian Standards certified, don’t cut corners. Prepare thoroughly, test diligently, and partner with trusted experts who understand the local regulatory landscape.