On April 14, 2026, Brazil's National Telecommunications Agency (ANATEL) officially published Act No. 5314 in the Official Gazette, approving Technical Requirements and Test Procedures for Conformity Assessment of Secondary Lithium Batteries for Stationary Applications. The act explicitly stipulates that starting from October 12, 2026, all lithium-ion secondary batteries used in telecommunications and stationary energy storage sectors must obtain mandatory ANATEL certification before being sold or installed in the Brazilian market.

The release of this regulation marks Brazil as one of the first countries in South America to implement comprehensive mandatory supervision of stationary lithium batteries. For Chinese battery manufacturers and exporters planning to enter the Brazilian and Latin American markets, understanding and complying with this new regulation has become an urgent priority.

Key Highlights at a Glance

• Issuing Authority: Brazil's National Telecommunications Agency (ANATEL)
• Act Number: Act No. 5314
• Release Date: April 14, 2026
• Mandatory Enforcement Date: October 12, 2026
• Product Classification: Category III Telecommunications Products
• Certification Cycle: Re-certification required every three years

1. Regulatory Background & Supervision Logic

Brazil has one of the largest telecommunications infrastructure markets in Latin America. With the continuous expansion of 5G networks and advancement of power grid modernization, demand for stationary lithium batteries in base station backup power, data center energy storage and renewable energy grid integration continues to grow. However, for a long time, there has been a lack of unified mandatory safety certification standards for stationary lithium battery products in Brazil, resulting in uneven product quality in the market and potential safety hazards such as thermal runaway and fire risks.

The release of Act No. 5314 formally incorporates stationary lithium batteries into ANATEL's telecommunications product conformity assessment system, classifying them as "Category III Telecommunications Products". The certification framework requires third-party laboratory testing, type approval and triennial factory supervision audits, aligning with existing regulatory requirements for traditional stationary energy storage products such as alkaline Ni-Cd and lead-acid batteries, building a comprehensive product safety supervision matrix.

2. Applicable Scope

Per Act No. 5314, the following products are included in the mandatory certification scope:

• Stationary lithium-ion batteries for backup power in communication base stations, telecom towers and data centers;
• Stationary Energy Storage Systems (ESS) adopting lithium battery technology, including products for grid support and off-grid communication scenarios;
• Lithium batteries with rated voltage of 24V DC or 48V DC (mainstream specifications in Brazil's telecommunications infrastructure).

Products outside the scope of this regulation:

• Portable lithium batteries (e.g. mobile phone batteries, power banks), governed by other ANATEL category rules;
• Electric Vehicle (EV) traction batteries;
• Other types of stationary chemical batteries (e.g. lead-acid batteries, Ni-Cd batteries), which are already regulated under existing Category III requirements.

3. Technical Standards & Test Requirements

Act No. 5314 establishes a unified technical assessment procedure, integrating Brazilian national standards (ABNT) and International Electrotechnical Commission (IEC) standards. All products must pass strict testing against the following standards before obtaining ANATEL certification:

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In addition, the regulation specifies the following key test condition requirements:

• Temperature Control Requirement: All charge-discharge cycles shall be conducted under 25°C±3°C conditions;
• Design Life: Batteries shall demonstrate a service life of more than 10 years under rated conditions;
• Sample Requirement: One mass-produced battery per model series shall be provided for initial certification and supervision testing, and samples shall conform to production specifications (including BMS, voltage, chemical composition and production line);
• Third-Party Certification: All testing shall be completed by ANATEL-accredited laboratories.

4. Certification Process & Key Timelines

Per the certification procedure specified in ANATEL Resolution No. 715, the certification process for stationary lithium batteries mainly includes the following steps:

1. Gap Analysis: Assess whether there are compliance data gaps in existing test reports against standards such as ABNT NBR 16975/16976 and IEC 62619;
2. Certification Testing: Entrust an ANATEL-accredited laboratory to conduct electrical performance, safety and EMC testing;
3. Application Submission: Submit test reports, technical documents and factory quality management documents to ANATEL to obtain Category III product certification;
4. Label Update: Mark the ANATEL certification number on the product, and prepare compliance declarations required by customs and end users;
5. Factory Supervision: Establish a continuous quality control system to meet ANATEL's triennial re-certification requirement.

Key Timelines

• April 14, 2026: Act No. 5314 officially published in the Official Gazette, regulation enters into force.
• October 12, 2026: Full compliance deadline – all stationary lithium batteries for telecommunications sold or installed in Brazil after this date must hold valid ANATEL certification.

5. Implications & Recommendations for Chinese Enterprises

As a major economic power in South America and a leader in energy transition in Latin America, Brazil's regulatory policies often have a demonstration effect on neighboring countries. The release of Act No. 5314 indicates a comprehensive improvement in safety compliance requirements for energy storage products across the entire Latin American market.

For Chinese enterprises planning to enter the Brazilian market, it is recommended to start preparations from the following aspects:

1. Initiate gap analysis as early as possible: Compare existing product test reports with standards such as ABNT NBR 16975/16976 and IEC 62619 to identify items requiring supplementary testing.
2. Select qualified testing partners: Ensure the selected laboratory is accredited by ANATEL and has CNAS/CMA testing capabilities for key standards such as IEC 62619 and ABNT NBR series.
3. Arrange test cycles reasonably: Considering the time requirements for various tests and ANATEL's review cycle, it is recommended to complete testing and application work in the first half of 2026 to leave sufficient time for certification approval.
4. Follow up on regulatory developments: In addition to ANATEL telecommunications product certification, Brazil also has INMETRO (National Institute of Metrology, Standardization and Industrial Quality) photovoltaic metrology certification requirements for energy storage products. Enterprises shall take both regulatory frameworks into consideration when planning Brazilian market access strategies.
5. Establish continuous compliance management mechanism: ANATEL requires triennial factory supervision audits; enterprises need to build long-term quality management capabilities rather than only completing one-time certification.

6. Closing Remarks

The implementation of Brazil ANATEL Act No. 5314 serves as a compliance threshold for stationary lithium battery products entering the Brazilian market, and also reflects the global trend of increasingly strict safety supervision in the energy storage industry. With less than four months left before the mandatory enforcement date of October 12, 2026, relevant enterprises should start compliance preparation as soon as possible to avoid market access obstruction due to lack of certification.

Guangdong Energy Storage Testing Technology Co., Ltd. (GDESTL) will continue to follow the latest developments in the international battery certification field, provide testing and certification consulting services for battery manufacturers and exporters, and help enterprises efficiently respond to ever-changing compliance requirements.

Frequently Asked Questions

Which products are covered by ANATEL Act No. 5314?

Act No. 5314 applies to stationary lithium-ion secondary batteries operating under high and medium discharge intensity, used for backup power in communication base stations, telecom towers, data centers and Stationary Energy Storage Systems (ESS). Lithium batteries with rated voltage of 24V DC or 48V DC are the main regulatory targets. Portable lithium batteries, EV traction batteries and stationary batteries of other chemistries are outside the scope of this regulation.

When will Act No. 5314 be mandatory? What should enterprises do now?

The mandatory enforcement date is October 12, 2026. Enterprises shall immediately initiate gap analysis, review existing test data against ABNT NBR 16975/16976 and IEC 62619 standards, entrust ANATEL-accredited laboratories to conduct supplementary testing, and complete testing and application work in the first half of 2026 to leave sufficient time for certification approval.

What are the main test items required for ANATEL certification application?

Main test items include: electrical performance testing (per ABNT NBR 16975:2021), safety testing (per ABNT NBR 16976:2021, covering mechanical, thermal safety and fire protection requirements), industrial lithium battery safety testing (per IEC 62619:2022), EMC immunity testing (per IEC 61000-4-2/4/5), and BMS functional safety assessment (per IEC 61508-1:2010). All tests shall be conducted under 25°C±3°C conditions.

What is the validity period of ANATEL certification? Is regular re-audit required?

Stationary lithium batteries are classified as Category III Telecommunications Products, with a certification validity period of three years. Factory supervision audits and re-certification are required every three years. Enterprises shall establish a continuous quality control system to ensure products always meet certification requirements during the audit cycle.

My product has passed IEC 62619 certification, can it be directly used for ANATEL certification?

IEC 62619:2022 is one of the core standards cited in ANATEL Act No. 5314, and products that have passed testing against this standard can reduce part of the redundant testing. However, ANATEL certification also requires compliance with Brazilian national standards such as ABNT NBR 16975:2021 and ABNT NBR 16976:2021, as well as EMC testing requirements, which usually require supplementary testing. It is recommended that enterprises entrust ANATEL-accredited laboratories to conduct gap analysis as early as possible.

What ANATEL certification related services can Guangdong Energy Storage Testing Technology Co., Ltd. provide?

Guangdong Energy Storage Testing Technology Co., Ltd. (GDESTL) holds CMA (202019014977) / CNAS L13753 qualifications, and can provide enterprises with full-process support services for ANATEL certification, including standard gap analysis, IEC 62619:2022 safety testing, ABNT NBR standard technical consulting, EMC testing coordination and certification application support, helping enterprises efficiently complete Brazilian market access compliance.