Custom Lithium Battery Pack Manufacturer & Replacement Battery Supplier
Engineered battery solutions for demanding applications — from prototype development to reliable mass production.
Nuranu designs and manufactures customized lithium battery packs for industrial equipment, robotics, medical devices, power tools, mobility products, energy storage systems, and consumer electronics.
We also provide compatible replacement battery solutions for selected leading brands and device platforms.
Our Custom Battery Capabilities
- Custom Li-ion & LiFePO4 Battery Packs
- 18650, 21700, 26650 & Pouch Cell Solutions
- Custom Voltage & Capacity
- Smart BMS Integration
- Custom Enclosures & Connectors
- Prototype to Mass Production
- Battery Testing & Quality Control
- OEM / ODM Battery Manufacturing
Custom Battery Packs Built Around Your Application
More Than a Battery Supplier — Your Battery Engineering Partner
From cell selection and electrical design to BMS configuration, enclosure integration, testing and production, we support the battery development process from concept to finished pack.
About Us
Custom Lithium Battery Packs Manufacturer and Supplier Since 2012
Nuranu was founded in 2012. We are a tech company that makes rechargeable batteries. The company has the best production equipment and R&D team. Nuranu uses advanced R&D technology, precise production, high quality, and excellent customer service to meet its goal of providing excellent products and services.
Our Custom Battery Solutions
Custom Voltage Battery Packs
Specify the voltage required by your equipment, from low-voltage portable devices to higher-voltage industrial battery systems.
Custom Capacity Battery Packs
Optimize capacity, runtime and physical size according to your application requirements.
Custom Battery Enclosures
Battery dimensions, mounting structures, connectors and housings can be customized to fit your equipment.
Smart BMS Integration
Integrate protection, monitoring and communication functions into the battery pack according to application requirements.
Lithium Battery Pack Solutions
Nuranu works with multiple lithium battery technologies and cylindrical or pouch cell formats to provide application-specific solutions.
Compact and flexible lithium-ion battery packs for portable equipment, electronics, robotics and other applications.
Higher-capacity cylindrical cell solutions for applications requiring greater energy density and longer operating time.
Long-cycle-life lithium iron phosphate battery solutions for applications where safety, durability and cycle life are critical.
Large-format cylindrical cell solutions for applications requiring higher capacity and robust performance.
Flexible pouch-cell battery solutions for compact devices, custom shapes and space-constrained applications.
High-Discharge Battery Packs
Battery solutions designed for applications requiring high continuous or peak current output.
Brand Replacement Battery Solutions
Our replacement battery solutions can be engineered around the original battery’s voltage, capacity, dimensions, connector, protection circuit and mechanical interface.
Dyson Replacement Battery
Replacement battery solutions for selected Dyson cordless vacuum models.
Makita Replacement Battery
Compatible lithium battery solutions for selected Makita cordless power tool platforms.
DeWalt Replacement Battery
Replacement battery solutions for selected DeWalt cordless tools and battery platforms.
Milwaukee Replacement Battery
Compatible battery solutions for selected Milwaukee cordless power tools.
Bosch Replacement Battery
Replacement battery solutions for selected Bosch cordless equipment.
Ryobi Replacement Battery
Compatible battery solutions for selected Ryobi cordless tool platforms.
Greenworks Replacement Battery
Replacement battery solutions for selected Greenworks outdoor power equipment.
iRobot Vacuum Replacement Battery
Battery solutions for selected robot vacuum and smart cleaning platforms, including iRobot and Eufy products.
Battery Solutions for Multiple Industries
Battery requirements vary significantly from one industry to another. A medical device may prioritize safety and reliability, while an AGV may require high cycle life, high discharge performance and intelligent battery monitoring. Nuranu develops battery packs around the operating conditions and technical requirements of each application.
Robotics & Automation
Custom battery packs for autonomous robots, robotic equipment and industrial automation systems.
Typical requirements include:
- High energy density
- Long operating time
- High discharge capability
- Smart BMS communication
- Compact mechanical design
AGV & AMR Battery Packs
Battery systems designed for automated guided vehicles and autonomous mobile robots.
Solutions can be customized for:
- Voltage
- Capacity
- Charging requirements
- Communication
- Installation space
- Cycle life
Medical Device Batteries
Battery solutions for portable medical and healthcare equipment where reliability, safety and consistent performance are essential.
E-Bike & Mobility Batteries
Lithium battery packs for electric bicycles, scooters and other light electric mobility applications.
Solar & Energy Storage
Battery pack solutions for portable energy systems, backup power and selected energy storage applications.
Power Tools
High-discharge battery solutions designed for cordless power tools and portable industrial equipment.
Industrial Equipment
Customized battery packs for instruments, machines, monitoring systems and other industrial equipment.
From Battery Requirements to Production
A reliable battery pack starts with understanding the application. Nuranu follows a structured development process to help transform your requirements into a production-ready battery solution.
1. Requirement Analysis
We review your equipment specifications, voltage, capacity, current, operating time, dimensions, connector, communication and environmental requirements.
2. Cell Selection
We select suitable lithium cells according to energy requirements, discharge performance, cycle life, dimensions and application conditions.
3. Battery Pack Design
Our engineers develop the electrical configuration, mechanical layout, wiring, protection system and BMS architecture.
4. Prototype Development
Prototype battery packs are produced for initial fit, electrical and functional evaluation.
5. Testing & Validation
The battery pack is evaluated according to the agreed technical requirements before entering production.
6. Mass Production
Approved battery designs move into controlled production with defined assembly and inspection procedures.
7. Quality Inspection
Finished battery packs undergo appropriate electrical, capacity, appearance and safety-related inspections.
8. Packaging & Delivery
Battery packs are prepared according to transportation and customer packaging requirements for shipment.
Battery Engineering Capabilities
A battery pack is a complete system — not simply a group of cells. Nuranu can help integrate:
Battery Cells
- 18650 cylindrical cells
- 21700 cylindrical cells
- 26650 cylindrical cells
- LiFePO4 cells
- Lithium polymer pouch cells
BMS & Protection
Depending on the application, battery packs can incorporate:
- Overcharge protection
- Over-discharge protection
- Over-current protection
- Short-circuit protection
- Temperature monitoring
- Cell balancing
- Communication functions
Mechanical Integration
We can support requirements involving:
- Custom dimensions
- Battery housings
- Mounting structures
- Connectors
- Cable assemblies
- Labels
- Custom packaging
Electrical Configuration
Battery packs can be configured according to required:
- Voltage
- Capacity
- Series / parallel configuration
- Continuous current
- Peak current
- Runtime
Quality Control
For battery applications, consistency is as important as capacity. Nuranu’s quality approach covers key stages of battery production, from cell preparation and assembly to testing and final inspection.
Cell Inspection
Cells can be evaluated for key electrical characteristics before assembly.
Cell Matching
Cells are matched according to applicable voltage, capacity and internal resistance requirements.
Welding Inspection
Battery connections and weld quality are checked during the assembly process.
Electrical Testing
Finished battery packs can be tested for voltage, capacity and other specified electrical parameters.
BMS Testing
Protection and battery-management functions are checked according to the applicable battery design.
Aging & Final Inspection
Battery packs undergo appropriate aging and final inspection procedures before shipment.
Certifications & Compliance
Depending on the battery chemistry, application and destination market, different regulatory and testing requirements may apply.
Nuranu can support customers with applicable battery documentation and testing requirements, including:
- UN38.3
- IEC 62133
- CE
- RoHS
- UL-related requirements
Certification and testing requirements vary by battery design and application. Contact our engineering team to confirm the applicable requirements for your project.
Why Companies Choose Nuranu Battery
Engineering Support
Discuss your electrical, mechanical and application requirements directly with our team.
Flexible Customization
Customize voltage, capacity, dimensions, connectors, BMS and enclosure requirements.
Multiple Cell Formats
Choose from cylindrical and pouch-cell battery technologies according to application needs.
Prototype Support
Validate your battery concept before committing to larger production volumes.
Manufacturing Support
Move from approved prototype designs to repeatable production.
OEM/ODM Capability
Support private-label, customized and application-specific battery projects.
Customer Testimonials
"I've worked with Nuranu for four years. Their battery packs make my consumer electronics business more competitive. I'll be a long-time Nuranu customer! Good customer service!"
– Waqas
"We were happy! These lithium battery packs are great. The price is good compared to other vendors. We recommend Nuranu as a reliable lithium battery pack supplier."
– Albert
"I would like to express my gratitude for your support and guidance, Nuranu. Thanks to your assistance, I have been able to complete my purchase work more efficiently and effectively."
–Sarah
Frequently Asked Questions
What types of battery packs does Nuranu manufacture?
Nuranu develops customized lithium-ion, LiFePO4 and lithium polymer battery packs using cylindrical and pouch cell formats, including 18650, 21700 and 26650 configurations.
Can you manufacture a completely custom battery pack?
Yes. Battery packs can be customized according to required voltage, capacity, dimensions, current output, BMS functions, connectors, wiring and mechanical requirements.
Do you support OEM and ODM battery projects?
Yes. We support application-specific battery development from initial requirements and prototype development through production.
What information do you need for a custom battery quotation?
Useful information includes your required voltage, capacity, operating current, dimensions, connector, charging method, application, estimated quantity and any existing battery drawing or sample.
Can you customize the BMS?
BMS functions can be configured according to the battery design and application requirements. Depending on the project, this may include protection, balancing, temperature monitoring and communication functions.
Do you provide battery replacement solutions?
Yes. Nuranu develops compatible replacement battery solutions for selected vacuum cleaners, power tools, robot vacuums and other battery-powered equipment.
Can you manufacture batteries based on an existing battery sample?
An existing battery, technical drawing or specification can help our engineers evaluate the required electrical and mechanical configuration.
What battery certifications are available?
Applicable testing and certification depend on the battery design, chemistry, application and destination market. Common requirements may include UN38.3, IEC 62133, CE, RoHS and applicable UL requirements.
Do you support small-volume prototype orders?
Prototype and small-volume development requirements can be discussed with our engineering and sales team. Production quantities and commercial terms depend on the project.
How do I start a custom battery project?
Send us your battery specifications, drawing, existing battery photos or sample information. Our team can review the requirements and recommend an appropriate battery configuration.
Get a Free Quote Today
Whether you need a custom 18650 battery pack, a high-capacity 21700 solution, a long-cycle LiFePO4 battery, an industrial battery system or a compatible replacement battery, Nuranu can help turn your requirements into a production-ready battery solution. Send us your voltage, capacity, dimensions, current requirements and application — or simply send your existing battery specification or drawing.
