High-Performance 21700 Lithium-ion Battery Pack Custom Solutions
From cell selection to BMS integration, providing high energy density, long cycle life, and industrial-grade safety energy solutions.
21700 Battery Pack Product Line
Complete voltage range customizable battery solutions
NRN-21700-24V-20Ah
NRN-21700-36V-15Ah
NRN-21700-48V-30Ah
NRN-21700-60V-25Ah
NRN-21700-24V-40Ah
NRN-21700-36V-50Ah
NRN-21700-48V-20Ah
NRN-21700-72V-35Ah
Core Advantages
Leading technology and comprehensive protection
High Energy Density
Premium 21700 cells deliver 35%+ more energy than traditional 18650 batteries, providing longer runtime in compact designs.
Smart BMS Management
In-house intelligent protection circuitry with overcharge, over-discharge, short circuit, and temperature control protection.
Extended Cycle Life
1000+ deep discharge cycles with 80%+ capacity retention, ensuring reliable long-term performance and value.
Multi-dimensional Customization
Flexible customization supporting voltage (12V-72V), capacity, dimensions, and casing materials to meet specific application needs.
Technical Specifications
Professional parameters for engineering evaluation
| Parameter | Typical Specifications (Customizable) |
|---|---|
| Cell Model | Premium 21700 cells (LG, Samsung, or Nuranu Select) Customizable |
| Configuration | 7S4P / 10S5P / 13S3P (Based on customer requirements) Customizable |
| Nominal Voltage | 24V / 36V / 48V / 60V / 72V Customizable |
| Rated Capacity | 10Ah - 100Ah+ Customizable |
| Max Continuous Discharge | 30A - 100A Customizable |
| Operating Temperature | Charge: 0~45°C / Discharge: -20~60°C |
| Cycle Life | 1000+ cycles @ 80% capacity retention |
| Casing Material | Flame-retardant ABS / Aluminum Alloy / Epoxy Resin Customizable |
| BMS Communication | CAN / RS485 / Bluetooth / UART Customizable |
| Safety Certifications | UN38.3, CE, UL, IEC 62133, ISO 9001 |
Custom Battery Pack Solutions
Tailored to Your Exact Requirements
💬 Consultation
Discuss your application requirements with our engineers
🎨 Design
Our team creates a custom battery solution tailored to your needs
🔬 Prototyping
Sample production and comprehensive testing
🏭 Production
Full-scale manufacturing with quality assurance
Manufacturing Excellence
Internal structure and process showcase
Precision Spot Welding
Advanced nickel strip welding ensuring uniform connections and minimal internal resistance.
- Laser/Resistance welding
- Weld resistance <0.3mΩ
- 100% automated process
Optimized Support Structure
Anti-vibration and heat-dissipation optimized bracket design ensuring safety.
- ABS/PC flame-retardant materials
- Thermal management channels
- Shock-absorbing design
Smart BMS Integration
Intelligent boards with multiple communication protocols (CAN/RS485/Bluetooth).
- Multi-layer protection
- Cell balancing management
- Real-time monitoring
Comprehensive Quality Control
Each process marked: cell sorting → auto-welding → BMS testing → charge/discharge simulation.
- Cell sorting and matching
- AI vision inspection
- Performance verification
Applications
High-quality application scenario showcase
Why Choose Nuranu
Your trusted partner in battery innovation
Years Experience
Deep expertise in lithium battery industry, providing full industrial chain technical support from equipment to materials.
Rigorous Testing
Every battery pack undergoes vibration, temperature cycling, crush, and overcharge safety testing to international standards.
Countries Served
Products exported to over 100 countries with comprehensive after-sales technical support and rapid response.
About Nuranu
Pioneering sustainable energy solutions since 2012
Our Story
Founded in 2012 in Dongguan, China, Nuranu Renewable Energy has grown from a traditional battery manufacturer to a high-tech enterprise specializing in advanced lithium-ion battery solutions. Our journey has been driven by a commitment to innovation, quality, and customer success.
With over a decade of experience, we've established ourselves as a trusted partner for businesses worldwide, from startups to Fortune 500 companies. Our state-of-the-art manufacturing facilities produce over 100,000 battery packs monthly, serving diverse industries including electric mobility, renewable energy storage, and industrial automation.
Our Mission: To drive the global transition to sustainable energy by delivering innovative, reliable, and customizable battery solutions that power a cleaner future.
Core Values
- Customer-Centric: Your success is our priority
- Innovation: Continuous R&D investment and technology advancement
- Quality First: Uncompromising standards in every product
- Integrity: Transparent communication and ethical business practices
- Sustainability: Committed to environmental responsibility
Our Capabilities
Excellence in quality control, research & development, and production
Rigorous Quality Control
Our comprehensive quality control system ensures every battery pack meets the highest international standards. We employ advanced testing equipment and rigorous protocols throughout the production process.
Each battery undergoes multiple quality checkpoints from raw material inspection to final product validation. Our QC team performs over 50 different tests to guarantee safety, performance, and reliability.
- UN38.3 transport safety testing
- IEC 62133 battery safety compliance
- Thermal imaging and vibration simulation
- Drop testing and short circuit protection
- Cycle life validation (1000+ cycles)
- Capacity verification and matching
- 100% EOL (End-of-Line) testing
Innovation-Driven R&D
Our dedicated research and development center is equipped with cutting-edge facilities and staffed by experienced battery engineers. We continuously invest in technology advancement to stay ahead of industry trends.
Our R&D capabilities enable us to develop customized solutions that precisely match your application requirements, from cell chemistry optimization to advanced BMS algorithms.
- Advanced BMS development with predictive diagnostics
- Thermal management research for extreme conditions
- Cell chemistry optimization for extended cycle life
- Rapid prototyping capabilities (design to sample in days)
- Collaborative engineering with customer teams
- Material science research and testing
- Safety enhancement technologies
Advanced Production Capabilities
Our state-of-the-art 24/7 automated production lines ensure consistent quality and predictable lead times. We can scale from pilot runs to full production of 100,000+ units monthly without compromising standards.
Located in Dongguan, China, our ISO 9001 certified manufacturing facility features clean rooms, automated assembly lines, and comprehensive testing stations at every production stage.
- ISO 9001 certified quality management systems
- Automated cell sorting and matching for balanced performance
- Clean room assembly for sensitive electronic components
- Flexible production scheduling for urgent requirements
- Real-time production monitoring and traceability
- Environmentally controlled storage facilities
- Capacity to handle both small and large volume orders
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