If “One Test, Global Access” Were Possible,

Would You Say No?

CB Certification is exactly that golden key to opening global markets.As the global mutual recognition system established by the IECEE, CB certification has become the top strategy for battery manufacturers expanding internationally.

This article gives you a complete breakdown:the importance of battery CB certification, applicable standards, application process, cost, and timeline — to help you go global efficiently and compliantly.

01 What is Battery CB Certification?

The CB System (Certification Body Scheme) is a global mutual recognition system established by the IECEE (International Electrotechnical Commission for Conformity Testing and Certification of Electrical Equipment).

Its core value:Based on mutual recognition of test results among member countries, the CB system helps manufacturers obtain national certifications or approvals, greatly boosting international trade.

For lithium-ion battery manufacturers:CB certification means professional testing, evaluation, and audit performed in a CB-certified laboratory (CBTL) according to CB standards, resulting in a safety certification certificate.

With this certificate:Manufacturers can use the CB test report and certificate to apply for national certifications in any CB member country or region — usually without additional full retesting (only minor local difference tests may be required in some countries).This saves massive time and cost.

02 Why Must Batteries Have CB Certification?

1. Open markets in 50+ countries — One Test, Global Access

The CB system covers more than 50 member countries, including all major economies:EU, USA, Japan, Korea, Australia, and more.

Once you hold a CB certificate:You only need minor local difference tests to quickly convert to local national certifications — no repeated full testing.

2. Drastically save time and cost

With CB certification, you achieve safety certification for 50+ countries in one go, avoiding the expensive, time‑consuming process of repeated testing for each country.

Compared with applying for certification country by country:

• Certification cycle reduced by more than 50%
• Testing cost lowered by 30%–50%

3. Improve customer trust & product competitiveness

CB certification is a globally recognized symbol of product quality and safety.Overseas distributors and end users strongly trust products with the CB mark, as the certification covers overcharge, short circuit, high/low temperature, and other safety scenarios.

Batteries with CB certification stand out in the global market.

4. Reduce compliance risks & trade barriers

Safety requirements for batteries are becoming stricter worldwide.Products without authoritative certification risk being detained at customs or failing market inspections.

CB certification helps you avoid these issues and break through technical trade barriers.

03 Product Scope Covered by CB Certification

CB certification applies to all types of lithium-ion batteries:

• Consumer batteries: mobile phone, laptop, digital camera, camcorder batteries
• Portable energy storage: power banks, portable power stations
• Power tool batteries
• Power batteries: EV, hybrid vehicle batteries
• Drone batteries: consumer & industrial drones
• Cylindrical cells, button cells, wireless communication batteries, etc.

04 Core Standards & Test Items

Main Standard

Lithium-ion battery CB certification is mainly based on IEC 62133‑2,the international safety standard for portable sealed secondary lithium‑ion cells and batteries, adopted by most countries.

Key Safety Tests

Electrical Safety

• Overcharge test
• External short circuit test
• Forced discharge test
• Continuous low-rate charging (28 days)

Mechanical Safety

• Crush test (13 kN force)
• Vibration test
• Mechanical shock test
• Free drop test (1 m)

Environmental Safety

• Temperature cycling
• Thermal abuse (130°C)
• Low pressure test (11.6 kPa, simulating air transport)

Pass criteria:No fire, no explosion, no leakage during any test.

05 CB Certification Application Process

Working with a professional CBTL laboratory ensures a clear and efficient process.

Stage 1: Preparation & Document Review

Required documents (English version):

• Product manual, specification, photos, model list
• Circuit diagram, PCB layout, explosion diagram
• Key component list with certification numbers
• CB application form, label draft

Stage 2: Sample Testing

Sample requirements:

• Cells: ~70 pcs
• Battery packs: ~28 pcs

Samples are tested in a CBTL laboratory.Failure and rectification may add 2–3 weeks.

Stage 3: Report Review & Certificate Issuance

After passing tests, the laboratory issues a CB test report.The NCB (National Certification Body) reviews and issues the CB test certificate and report.

06 Cost & Timeline

Typical Timeline

• Regular CB certification: 5–7 weeks
• With rectification: +2–3 weeks
• Drone battery CB: ~45 days

Cost Reference

Cost varies by product type, structure, and test requirements:

• Testing fee: depends on cell / battery pack complexity
• Application fee: charged by NCB
• Service fee: document preparation, guidance, rectification support

Market reference:CB certification cost usually ranges from several thousand to tens of thousands of RMB.Exact quotation requires detailed battery specifications.

07 Validity & Maintenance

The CB test certificate does not have a fixed validity period,but its validity depends on the current version of IEC standards.When standards are updated, retesting is required.

Note:Power bank CB certification is typically valid for 5 years.Major changes in design, materials, or production process may require recertification.

08 FAQ

Q: Relationship between CB and other certifications?

A: CB is a foundational international safety certification.You can quickly convert CB to many national certifications (e.g., Korea KC) without repeated testing.

Q: Do all countries accept CB?

A: Most major economies accept CB.Some countries require minor local difference tests.

Q: Do I need to recertify after product changes?

A: Yes — major changes affecting safety (structure, key components, software) require reassessment.

Q: How to choose a CB certification body?

A: Choose an IECEE‑recognized CBTL laboratory with strong expertise in battery standards.

09 Why Choose Us?

Guangdong Energy Storage Testing Technology Co., Ltd.is a third-party testing institution with authoritative qualifications including:CNAS L13753, CMA (202019014977), and CBTL.

Our Advantages

1. Authoritative CBTL qualificationOur CB reports enjoy the highest global recognition.

2. Professional technical teamExpert pre‑testing and rectification support for high first‑time pass rate.

3. Proven project experienceThousands of successful battery CB certification projects.

4. One‑stop global certification serviceFull process from consultation to certificate issuance.We help you convert CB into other national certifications — truly One Test, Global Access.

CB certification is essential for lithium‑ion batteries entering the global market.As global safety requirements rise, CB certification has become a must for manufacturers.

For any questions or service needs regarding lithium-ion battery CB certification,welcome to contact Guangdong Energy Storage Testing Technology Co., Ltd.

Contact Us

• Mobile: 13925598091
• Tel: 0769‑85075888‑6617
• Email: net03@gtggroup.com