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Full-Tab Cylindrical Lithium-Ion Batteries
MINDWAY Full-Tab Cylindrical Lithium-Ion Batteries: 21700 & 46950 Cells for High-Performance Applications
Executive Summary
The global shift toward electrification in electric vehicles （EVs） 、 electric aviation （eVTOL） 、 and renewable energy storage systems demands batteries with higher energy density、 lower resistance、 faster charging、 and safer performance。
MINDWAY” s full-tab cylindrical lithium-ion batteries — the 21700 lithium-ion cell and the 46950 cylindrical cell — are engineered to meet these challenges。 By leveraging full-tab technology、 these cells deliver high discharge rates、 superior thermal stability、 and long cycle life、 setting a new benchmark for advanced cylindrical battery solutions。
1。 Full-Tab Cylindrical Battery Technology
Conventional cylindrical cells rely on single-tab electrode connections、 which create bottlenecks in current flow、 raising internal resistance and generating heat。
MINDWAY” s full-tab cylindrical battery design eliminates these limitations:
・ Low internal resistance: ≤4 mΩ （21700） and ≤1。 0 mΩ AC （46950）
・ Improved thermal management: uniform current distribution reduces localized heating
・ High discharge rates: continuous 40A （21700） and 185A （46950）
・ Enhanced safety & cycle life: stable performance across hundreds of cycles
This makes MINDWAY cylindrical lithium-ion batteries ideal for demanding EV、 eVTOL、 and industrial applications。
2。 Technical Specifications of MINDWAY Full-Tab Cylindrical Cells
Table 1。 MINDWAY 21700 Lithium-Ion Cell
Parameter | Specification |
Nominal Capacity | 5000 mAh （min 4950 mAh） |
Nominal Voltage | 3。 6 V |
Max Continuous Discharge | 40A （90A with thermal cut-off） |
Pulse Discharge | 140A （3s） |
Max Charge Current | 15A |
Internal Impedance | ≤4 mΩ |
Operating Temp。 | Charge: 0~45°C。 Discharge: -20~60°C |
Cycle Life | ≥500 cycles @ 60% capacity retention |
Dimensions | Ø ≤21。 5 mm × H ≤70。 5 mm |
Weight | ≤75 g |
Key Benefits: High power density、 low impedance、 ideal for compact EV packs、 drones、 robotics、 and power tools。
Table 2。 MINDWAY 46950 Cylindrical Cell
Parameter | Specification |
Nominal Capacity | 37。 0–38。 0 Ah |
Nominal Voltage | 3。 53 V |
Max Continuous Discharge | 5C ≈ 185A |
Max Pulse Discharge | 8C ≈ 296A （30s） |
Max Continuous Charge | 4C ≈ 148A |
Internal Resistance | ≤1。 0 mΩ （AC） 。 ≤3。 0 mΩ （DC） |
Operating Temp。 | Charge: 0~45°C。 Discharge: -20~55°C |
Cycle Life | ≥1000 cycles @ 70% capacity retention |
Dimensions | Ø 46。 35 ±0。 30 mm × H 95 ±0。 3 mm |
Weight | ~400 g |
Key Benefits: Ultra-high capacity、 powerful discharge capability、 optimized for electric aviation、 commercial EV battery packs、 and renewable energy storage systems。
3。 Performance Comparison of 21700 vs。 46950 Cylindrical Batteries
Feature | 21700 Lithium-Ion Cell | 46950 Cylindrical Cell |
Application | Compact、 high-power devices | Large-scale EV、 eVTOL、 ESS |
Capacity | 5 Ah | 37–38 Ah |
Energy per Cell | ~18 Wh | ~130 Wh |
Max Continuous Power | 144 W | 653 W |
Pulse Power | ~500 W | 」 1000 W |
Energy Density | ~240 Wh/kg | ~325 Wh/kg |
Cycle Life | 500 cycles | 1000 cycles |
4。 Application Scenarios
MINDWAY” s cylindrical lithium-ion batteries are engineered for diverse industries:
・ 21700 Full-Tab Lithium-Ion Cell:
Compact applications demanding high discharge rates and fast charging、 including electric scooters、 drones、 robotics、 power tools、 and portable energy storage devices。
・ 46950 Full-Tab Cylindrical Battery:
Large-scale and mission-critical systems such as eVTOL aircraft、 commercial electric vehicles、 marine propulsion、 and renewable energy storage systems （ESS） 。
5。 Safety & Reliability Testing
MINDWAY batteries comply with UN38。 3、 IEC 62133、 and aviation-grade safety standards。 Tests include:
・ Overcharge and over-discharge
・ Short-circuit and crush tests
・ Thermal abuse （130°C heating）
・ Vibration、 drop、 and low-pressure tests
Result: No fire、 no explosion — ensuring maximum safety for critical applications。
6。 Conclusion
MINDWAY” s full-tab cylindrical lithium-ion cells deliver the ideal balance of energy density、 high discharge capability、 and safety。
・ The 21700 full-tab battery is optimized for compact high-power devices。
・ The 46950 cylindrical cell is designed for aviation、 EV、 and grid-scale energy storage。
With advanced full-tab technology、 MINDWAY provides the next generation of cylindrical batteries that empower industries to build faster、 safer、 and more reliable energy systems。
MINDWAY Cylindrical Lithium-Ion Batteries – Power Beyond Limits。
