CE Approved 21700 Battery Cell For E-Bike | CNS BATTERY
The electric mobility revolution continues to accelerate across global markets, with e-bikes emerging as a cornerstone of sustainable urban transportation. For B2B buyers and manufacturers seeking reliable power solutions, CE Approved 21700 Battery Cells represent the gold standard for performance, safety, and regulatory compliance. At CNS BATTERY, we deliver premium cylindrical battery cells engineered specifically for e-bike applications, meeting stringent European certification requirements while optimizing energy density and cycle life.
Why 21700 Battery Cells Lead the E-Bike Industry
The 21700 cylindrical cell format has rapidly become the preferred choice for e-bike manufacturers worldwide. Compared to the legacy 18650 standard, 21700 cells offer approximately 40-50% higher energy density, enabling longer range without increasing pack weight. This advancement stems from the larger physical dimensions (21mm diameter × 70mm length), which accommodate more active material while maintaining excellent thermal management characteristics.
Key technical advantages include:
- Enhanced Capacity: Typical 21700 cells deliver 4,800-5,200mAh capacity versus 3,000-3,500mAh for 18650 equivalents
- Improved Discharge Rates: Continuous discharge capabilities of 15-25A support high-power e-bike motor demands
- Superior Thermal Performance: Larger surface area facilitates better heat dissipation during high-load operation
- Cost Efficiency: Fewer cells required per pack reduces assembly complexity and BMS costs
CE Certification: Your Gateway to European Markets
For e-bike battery suppliers targeting Europe, CE certification is not optional—it’s mandatory. The CE mark demonstrates compliance with EU safety, health, and environmental protection directives, including:
- EN 62133-2: Safety requirements for portable sealed secondary cells
- UN 38.3: Transportation safety testing for lithium batteries
- RoHS Compliance: Restriction of hazardous substances
- EMC Directive: Electromagnetic compatibility standards
CNS BATTERY’s 21700 cells undergo rigorous third-party testing through accredited laboratories, ensuring full compliance with all applicable European regulations. Our certification documentation supports seamless market entry across EU member states, reducing time-to-market and eliminating compliance risks for our B2B partners.
Technical Specifications for E-Bike Applications
Our CE Approved 21700 battery cells feature optimized chemistry for e-bike duty cycles:
| Parameter | Specification |
|---|---|
| Nominal Capacity | 5,000mAh (typical) |
| Nominal Voltage | 3.6V / 3.7V |
| Max Continuous Discharge | 20A |
| Cycle Life | 1,000+ cycles @ 80% DOD |
| Operating Temperature | -20°C to 60°C |
| Energy Density | 250-280 Wh/kg |
The cells utilize advanced NCM (Nickel-Cobalt-Manganese) cathode chemistry, balancing energy density with thermal stability. Integrated safety features include PTC (Positive Temperature Coefficient) protection, CID (Current Interrupt Device), and multi-layer separator technology to prevent thermal runaway scenarios.
Geo-Targeted Compliance for Global Markets
Understanding regional regulatory variations is critical for international e-bike manufacturers. CNS BATTERY supports compliance requirements across key markets:
- European Union: CE, RoHS, REACH, Battery Directive 2006/66/EC
- North America: UL 1642, UL 2054, UN 38.3
- United Kingdom: UKCA marking post-Brexit
- Australia/New Zealand: AS/NZS 3820 compliance
Our manufacturing facilities maintain ISO 9001:2015 and ISO 14001:2015 certifications, ensuring consistent quality and environmental responsibility. For detailed certification documentation and technical support, visit our battery manufacturers in China resource page.
CNS BATTERY: Your Trusted 21700 Cell Partner
Choosing the right battery supplier requires evaluating manufacturing capability, quality systems, and after-sales support. CNS BATTERY distinguishes itself through:
- Vertical Integration: Complete control from raw material sourcing through final cell assembly
- Advanced Manufacturing: Automated production lines with real-time quality monitoring
- Technical Support: Dedicated engineering team for pack design optimization
- Supply Chain Reliability: Stable raw material procurement and inventory management
- Competitive Pricing: Direct manufacturer pricing without intermediary markups
Our 21700 cylindrical battery cells are available for immediate sampling and bulk orders. Explore our complete cylindrical battery cell product portfolio to find the optimal solution for your e-bike platform.
Conclusion
As e-bike adoption accelerates across Europe, North America, and emerging markets, selecting CE Approved 21700 battery cells from a qualified manufacturer becomes a strategic imperative. CNS BATTERY combines technical excellence, regulatory compliance, and manufacturing scale to deliver power solutions that meet the demanding requirements of modern e-mobility applications.
For partnership inquiries, technical consultations, or quotation requests, contact our international sales team at CNS BATTERY Contact. Let us power your e-bike innovation with certified, reliable, and high-performance 21700 battery cells.
Keywords: CE Approved 21700 Battery, E-Bike Battery Cell, Cylindrical Lithium Battery, CNS BATTERY, 21700 Cell Manufacturer, European Battery Compliance, E-Mobility Power Solution, Lithium Ion Battery Supplier
