Lithium batteries are classified by outer casing into three types: Cylindrical, Prismatic, and Pouch batteries. Each type has unique strengths for different applications.

1. Cylindrical Lithium Battery

Advantages
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Mature production process, low PACK cost, and high product yield.

Unified international standard sizes and models, high automation, ideal for mass continuous production.

Low internal resistance and low self‑consumption, improving battery range.

Large specific surface area for excellent heat dissipation and good cell consistency.

Fully sealed, maintenance‑free during use.

Strong mechanical casing, high pressure resistance, minimal swelling, high safety, low explosion risk.

Flexible layout and wide application; custom‑shaped battery packs available.

2. Prismatic Lithium Battery

Advantages
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High single‑cell energy density, large capacity, simple high‑capacity assembly.

Wound or laminated internal structure offers better cell protection and higher safety than pouch batteries.

Low internal resistance, supports stable high‑rate discharge.

Casing mostly made of aluminum alloy or stainless steel, strong stability and impact resistance.

3. Pouch Lithium Battery

Advantages
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Excellent safety: no explosion, only slight swelling (clear warning for timely action).

Lightweight: 40% lighter than steel‑case batteries, 20% lighter than aluminum‑case batteries of the same capacity.

High capacity: 10%–15% higher than steel‑case, 5%–10% higher than aluminum‑case batteries of the same size.

Ultra‑low internal resistance (as low as <35 mΩ), greatly reducing self‑discharge.

Flexible design: bendable and deformable, suitable for slim / flexible products.

High cost performance.