For lithium-ion battery manufacturers and exporters, KC Certification (Korea Certification) is a mandatory threshold to enter the Korean market. It serves as a safety passport and a critical market access requirement.

This article fully explains the KC certification process, cost, timeline, and reveals the time-saving and cost-effective shortcut: CB Conversion to KC.

1. Why is KC Certification Mandatory for Batteries?

KC Certification is a compulsory safety scheme enforced by KATS (Korean Agency for Technology and Standards) under the Electrical Appliances Safety Control Act.

1.1 Legal Requirement

All lithium-ion batteries sold in Korea must bear the KC mark.Non-certified products will be:

• Rejected at customs
• Banned from the market
• Subject to legal penalties and fines

1.2 Safety Assurance

KC Certification prevents hazards such as electric shock, fire, overheating and explosion, protecting consumers and property.

1.3 Strict Market Surveillance

KATS conducts random market inspections.In 2024, common failures for batteries included:

• Non-standard marking and labeling
• Failed discharge protection tests

Scope

KC applies to lithium-ion cells and battery packs for portable devices:mobile phones, laptops, power banks, power tools, etc.

2. Core Standard & Certification Path

Core Standard: KC 62133

KC 62133 harmonizes with IEC 62133, the international safety standard for lithium batteries.This alignment enables CB conversion to KC.

Main Tests

• Electrical: low-rate charge, overcharge, forced discharge, external short circuit
• Mechanical: crush, drop, vibration, shock
• Environmental: thermal abuse, temperature cycling, low pressure
• Performance: capacity, efficiency, cycle life

Two Types

• Voluntary Safety Confirmation: low-risk products
• Mandatory Safety Certification: high-risk products (most lithium-ion batteries)

3. Best Path: CB Conversion to KC

For Chinese battery exporters, CB transfer is strongly recommended.

表格

Advantages

1. Faster Approval: Avoid long queues and international shipping delays.
2. Lower Cost: No repeated testing or expensive Korea logistics.
3. One Test, Multiple Markets: CB report supports global certifications.
4. Better Technical Control: Immediate support for testing and adjustment.

4. 4-Step KC Certification Process

Step 1: Preparation & Document Review

Required documents:

• Business license & ISO 9001 certificate
• Product specification, schematic, BOM
• CB certificate & test report (for conversion)
• UN38.3 report
• Korean user manual & KC label design
• Product photos & disposal guide

Critical Notes:

• Model, manufacturer and parameters must match CB report exactly.
• IC and MOS marking must match drawings.
• KC is issued based on minimum capacity.

Step 2: Product Testing

• Direct KC: Test in KATS-accredited lab per KC 62133.
• CB Conversion: Test per IEC 62133 in a CBTL lab (like Guangdong ESTL).

Step 3: Application & Factory Audit

Submit application to Korean certification bodies (KTL, KTR, KTC, etc.).Factory audit is mandatory for compulsory certification:

• Initial audit for first certification
• Annual follow-up audit

Step 4: Certification & Marking

After approval, the KC certificate is issued.The KC mark + certificate number must be permanently marked on the product.

5. Cost & Timeline

Timeline

• Direct KC: about 3 months
• CB to KC: 8–12 weeks

Suggestion: Start preparation 3–4 months in advance.

Cost Structure

• Testing fee (cell / pack separately)
• Certification fee (Korean body)
• Agency service fee

Sample Quantity

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

Cost-Saving Tip

Use CB conversion to cut total cost by nearly 50%.

6. FAQ

Q1: Do all lithium batteries need KC for Korea?

A: Yes. Almost all portable lithium-ion cells and packs are mandatory.

Q2: Do I need to send samples to Korea for CB conversion?

A: Normally no.Korean bodies accept CB reports from IECEE-recognized NCB/CBTL without re-testing.

Q3: How long is KC certificate valid?

A: Usually 5 years. Annual factory audits are required.

Q4: Can UL or PSE certification simplify KC?

A: Limited. CB conversion is the only officially recognized fast path.

Q5: Do cells and packs both need KC?

A: Battery packs must be certified as a complete product.We recommend both cell and pack have CB certificates for smooth approval.

One-Stop KC & CB Service

Korea’s demand for portable energy storage is booming.Imports from China grew over 20% in 2023.

Guangdong ESTL Technology Co., Ltd.is a professional battery testing and certification body with:

• CNAS (L13753)
• CMA (202019014977)
• IECEE CBTL

We provide:

• CB test & KC conversion
• Full document review & label design
• Factory audit guidance
• One-stop certification solution

Contact Us

Hotline: +86 13925598091
Tel: 0769-85075888 Ext.6617
Email: net03@gtggroup.com
Address: 2nd Floor, Block B, Jinshengsheng Industrial Park,Headquarters 2nd Road, Songshan Lake, Dongguan