The demand for solar energy is increasing rapidly in India. Solar photovoltaic (PV) systems are widely used in residential, commercial, industrial and utility-scale projects. Batteries play an important role in these systems by storing electricity generated through solar panels for later use. To maintain product safety, quality and reliability, the Government of India has introduced mandatory compliance requirements for solar storage batteries.

BIS Certification for Batteries in Solar PV Systems is an important regulatory requirement for manufacturers and importers supplying these products in the Indian market. The certification ensures that batteries meet the applicable Indian Standards and prescribed quality requirements.

1. What Is BIS Certification for Solar Batteries?

The Bureau of Indian Standards (BIS) is India's national standards body. It develops Indian Standards and provides product certification to ensure compliance with specified quality and safety requirements.

Under the Solar Systems, Devices and Components Goods Order, 2025, storage batteries used in solar PV applications are covered by mandatory BIS certification requirements.

The applicable standard for these batteries is IS 16270:2023 – Secondary Cells and Batteries for Solar Photovoltaic Application: General Requirements and Methods of Test.

This revised standard includes lithium batteries and other electrochemical technologies along with requirements for battery performance and testing.

2. Which Batteries Require BIS Certification?

BIS Registration for Solar Batteries applies to storage batteries falling within the scope of the applicable solar QCO.

The major battery technologies include:

• Lead-Acid Batteries: Commonly used in off-grid solar power systems for energy storage.

• Lithium-Ion Batteries: Used in modern solar energy storage systems because of their high energy density and efficiency.

• Other Battery Technologies: Additional electrochemical technologies covered under IS 16270:2023.

Manufacturers should verify their exact battery type, application and product specifications before applying for certification.

3. Applicable BIS Standard for Solar Batteries

The relevant Indian Standard is IS 16270:2023. It replaced the earlier IS 16270:2014 standard under the revised regulatory framework.

The updated standard introduces important changes, including:

• Inclusion of lithium battery types and other electrochemical technologies.

• Updated maximum charging current requirements.

• Additional long-duration capacity testing.

• Revised rated capacity requirements.

• Updated testing provisions for battery performance.

Following the latest applicable standard is essential for manufacturers seeking BIS Certification for Batteries in Solar PV Systems.

4. BIS Certification Process for Solar Batteries

Manufacturers must follow the prescribed BIS registration process to obtain approval for their solar storage batteries.

The general process includes:

1. Identify Applicable Standards: Confirm that the battery falls under IS 16270:2023 and the applicable QCO requirements.

2. Prepare Documentation: Arrange manufacturing details, product specifications, technical information and required declarations.

3. Product Testing: Submit battery samples to a BIS-recognised laboratory for testing according to the applicable standard.

4. Online Application: Submit the registration application through the BIS online portal with the required documents and test reports.

5. BIS Verification: BIS reviews the submitted application, technical documents and laboratory reports.

6. Registration Approval: After successful verification, BIS grants registration to the manufacturer, allowing the product to carry the applicable Standard Mark.

5. Documents Required for BIS Registration

Proper documentation helps manufacturers complete the BIS Certification process smoothly.

Commonly required documents include:

• Manufacturing unit details and address proof.

• Company registration certificate.

• Product technical specifications.

• Battery model and brand details.

• Manufacturing process information.

• Authorised signatory details.

• Test reports from recognised laboratories.

• Required declarations and undertakings.

• Trademark authorisation, where applicable.

Additional documents may be required depending on the manufacturer's location and product category.

6. Benefits of BIS Certification for Solar Batteries

Obtaining BIS Certification for Solar Batteries offers several advantages to manufacturers and importers.

• Regulatory Compliance: Helps meet mandatory Indian quality and safety requirements.

• Market Access: Supports legal manufacturing, import and sale of covered products in India.

• Product Reliability: Demonstrates conformity with applicable testing requirements.

• Customer Confidence: Builds trust among distributors, businesses and solar project developers.

• Business Opportunities: Helps manufacturers participate in India's growing solar energy market.

7. Why Choose Eikomp for BIS Certification?

Obtaining BIS Certification for Batteries in Solar PV Systems requires proper documentation, product testing and knowledge of the latest regulatory requirements.

Eikomp provides professional assistance to manufacturers and importers throughout the BIS registration process. Our team helps identify applicable standards, prepare documentation, coordinate product testing and manage application-related requirements.

Whether you are an Indian manufacturer or a foreign battery manufacturer planning to enter the Indian market, Eikomp can help simplify your certification journey.

Conclusion

BIS Certification for Batteries in Solar PV Systems is essential for meeting India's mandatory compliance requirements under the Solar Systems, Devices and Components Goods Order, 2025. Manufacturers and importers should understand IS 16270:2023, complete the required product testing and obtain valid BIS registration before supplying covered products in India. Proper compliance helps improve product quality, strengthen market credibility and support the growth of India's solar energy industry.