What is a Full-Tab Lithium-ion Battery?

A full-tab battery, also known as a tabless battery, is a structural innovation in cylindrical lithium-ion batteries: the entire edge of the positive and negative current collectors (aluminum/copper foil) is used as a conductive tab, instead of the traditional 1-2 individual metal tabs.

- Traditional single-tab: Only one point contact, long current path, high internal resistance, and high heat generation.

- Full-tab: 360° annular surface contact, current flows directly from all points on the electrode to the end face, resulting in an extremely short path.

1. Significantly Reduced Internal Resistance (≈50%–80%) - Traditional 18650: Internal resistance approximately 20–50 mΩ; full-tab can reduce it to below 5 mΩ.

- Lower internal resistance results in less heat generation, higher efficiency, and a 50%+ reduction in temperature rise under high load.

2. Doubled Charge/Discharge Rate (Maximum Power) - Discharge: Traditional 18650 ≈ 10–20A; All-tab 18650 can achieve 60A continuous discharge and 120A pulse discharge.

- Charging: Traditional ≈ 1C; All-tab supports 2C fast charging, reaching 80% in 10 minutes.

3. Longer Cycle Life and Better Low-Temperature Performance - Cycle life increased by 50%–60% (e.g., from 500 cycles → 800 cycles).

- Higher discharge retention rate at low temperatures (-20℃/-40℃), suitable for extremely cold environments.

ACEY - battery life cycle tester mainly used for circle life testing and quality control of li-ion battery, lead-acid battery, Ni-Cd battery, NiMH battery and so on in production line or in lab. If you have any questions you'd like to ask, please feel free to contact us at any time.

4. Slightly Increased Energy Density and Enhanced Safety - Eliminates tab space, achieving an energy density of 250 Wh/kg+.

- Better thermal uniformity, reducing the risk of thermal runaway.

1. Power Tools (Most Mature, 90%+ market share): High-power impact drills, hammer drills, chainsaws.
2. New Energy Vehicles (High-End Cylindrical Type) - Tesla 4680, EVE 46 Series: High power, fast charging, long range models.
3. Electric Two-Wheeled Vehicles/Electric Motorcycles - 21700/32135 All-Taper Lithium Iron Phosphate: High rate capability, long lifespan, low cost.
4. Portable Energy Storage/Residential Energy Storage - 18650/21700 All-Taper Lithium Iron Phosphate: Fast charging, good low-temperature performance, suitable for outdoor power supplies and home energy storage.

5. Emerging Applications - Drones/Model Aircraft: High pulse discharge, lightweight.

6. Humanoid Robots/eVTOL: High power density, fast response.

7. Medical Equipment/Smart Home: Low noise, low temperature, long range.

Acey New Energy is a professional provider of advanced lithium battery equipment and complete lithium ion battery pack assembly line solutions for the new energy industry. We specialize in delivering comprehensive services for battery manufacturers, research institutes, universities, and innovative energy companies worldwide. From laboratory-scale battery research and pilot production to fully automated mass production lines, we offer one-stop solutions including factory layout planning, equipment design and manufacturing, system integration, on-site installation & commissioning, as well as technical training and after-sales support. With a strong focus on innovation, quality, and customer-oriented service, Acey New Energy is committed to helping global customers improve production efficiency and accelerate the development of lithium battery technologies.

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