Samsung SDI – Global Lithium-Ion Cell Manufacturer

Samsung SDI Co., Ltd. is a South Korean advanced materials and energy solutions manufacturer specialising in lithium-ion battery technology for automotive, industrial and consumer electronics sectors. The company operates as a key subsidiary of the Samsung Group and is publicly listed on the Korea Exchange (KRX: 006400).

Corporate Overview

Founded: 1970 (battery division expansion in the 1990s)
Headquarters: Yongin-si, Gyeonggi-do, South Korea
Parent Group: Samsung Group
Primary Business: Lithium-ion cells, EV battery systems, energy storage solutions and electronic materials

Battery Manufacturing Position

Samsung SDI is widely recognised as one of the major global OEM lithium-ion cell manufacturers. Independent market research firms such as SNE Research and BloombergNEF consistently report Samsung SDI among the leading global producers of lithium-ion batteries by production capacity and market participation.

The company manufactures original cell chemistry platforms rather than re-wrapped batteries. Cylindrical cell series such as 25R, 30Q, 35E, 40T and 50E are widely used in regulated power devices, mobility platforms and industrial tools.

Product Architecture

Cylindrical cells: 18650, 21700 and related industrial formats
Prismatic and pouch cells for EV and storage systems
Battery modules and packs for automotive applications
Energy Storage Systems (ESS)

Model Naming & Technical Interpretation

Samsung cylindrical battery model names typically combine capacity class and generation indicators. For example:

30Q – 3000mAh class cell
40T – 4000mAh class high-drain cell
50E – 5000mAh high-capacity cell

Continuous discharge rating (CDR), pulse rating and cycle life vary by model and must be interpreted according to official manufacturer documentation.

Verification & Datasheet Reference

Parameter Verification: For safety-critical applications, technical parameters should be verified using official Samsung SDI datasheets and not solely community forum interpretations.

Official datasheets provide validated information on continuous discharge rating (CDR), maximum charge current, voltage limits and temperature operating ranges.

Manufacturing & Global Presence

Samsung SDI operates manufacturing facilities in South Korea and internationally, including strategic production sites supporting European and global EV markets. The company supplies OEM manufacturers, automotive brands and authorised distribution partners worldwide.

Regulatory & Compliance

Samsung SDI lithium-ion cells comply with international transport and safety standards, including UN38.3 testing requirements for lithium battery shipment. Regional compliance frameworks apply depending on the destination market.

Retail Context (Ireland / EU – YMYL Notice): Lithium-ion cells are industrial energy components. Proper calculation of current load, safe storage and compliant transport procedures must be followed. Always consult official technical documentation when calculating amperage requirements for regulated devices.

Last updated: 19 February 2026