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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.
