• +86-15360902347

Custom 21700 Li-ion Battery Packs

Explore our high-performance 21700 lithium-ion battery packs, available in 11.1V, 14.8V, 22.2V, 24V, 36V, 43.2V, 48V, and 52V. Designed for e-mobility, automation, and high-drain equipment, our packs feature smart BMS, certified safety, and flexible custom configurations.

Request a Free Quote

Custom 21700 Li-ion Battery Packs for Industrial Applications

At Junda Battery, we specialize in designing and assembling high-performance 21700 lithium-ion battery packs tailored to your specific voltage and use case. Our engineering team rigorously tests various 21700 cell models under high discharge loads and extreme temperature conditions to ensure reliable performance, long cycle life, and safety across demanding environments.

We provide custom 21700 battery pack solutions for a wide range of industrial and mobility applications, including:

  • Electric Bikes – Long-range, high-power packs for urban and off-road riding

  • Power Tools – Compact, high-drain solutions for cordless applications

  • Drones & UAVs – Lightweight and energy-dense packs for flight endurance

  • AGVs & Robots – Stable and smart-powered battery packs for automation

  • Medical Equipment – Certified, temperature-tolerant packs for healthcare use

  • Electric Surfboards – Waterproof, high-output packs for extreme conditions

Proven Engineering in 21700 Pack Architecture

Our engineering team brings over 15 years of experience in lithium battery integration, with deep technical know-how in 21700 cell configuration, heat management, and structural optimization. Each battery pack is designed to strike the right balance between energy density, safety, and lifespan—from concept to mass production.

Custom BMS Design & Precision Component Sourcing

We offer fully customized BMS solutions tailored to your voltage, current, and protocol needs—whether CANBus, UART, or RS485. You can also specify your preferred IC, MOSFET, or fuse brands to match sourcing preferences or regulatory standards, ensuring a fully aligned supply chain.

Rigorous Quality Control for Every 21700 Pack

All 21700 battery packs undergo strict cell grading, resistance balancing, insulation testing, and thermal verification. We monitor cycle life and safety thresholds across batches to ensure consistent output. Each unit complies with ISO 9001, UN38.3, MSDS, and other relevant certifications for international export.

Fast Turnaround for Custom Projects

Thanks to our in-house assembly lines and streamlined QC process, we deliver prototype samples in as fast as 7 days, and mass production within 15–25 days. Perfect for OEMs and engineering teams under tight timelines, or brands scaling up quickly with private label 21700 solutions.

Battery Pack Types We Offer

We design and manufacture custom lithium battery packs tailored to your exact specifications—from high-power cylindrical cells to solid-state and waterproof modules.

11.1V 21700 Li-ion Battery Pack

Compact 3S battery pack using high-capacity 21700 cells, ideal for portable devices, IoT systems, and low-power industrial equipment. Customizable in shape, capacity, and BMS integration.

Quote

14.8V 21700 Li-ion Battery Pack

This 4S 21700 Li-ion pack delivers stable 14.8V output for RC units, compact tools, and medical equipment. Offers longer runtime and enhanced thermal performance compared to 18650 solutions.

Quote

22.2V 21700 Li-ion Battery Pack

Built with 6S configuration, the 22.2V 21700 battery pack is optimized for drones, high-discharge tools, and robotic systems. Balances energy density and output efficiency with custom BMS options.

Quote

24V 21700 Li-ion Battery Pack

High-efficiency 7S pack ideal for industrial controllers, AGVs, and lightweight mobility devices. Offers reliable power and extended cycle life with smart protection features.

Quote

36V 21700 Li-ion Battery Pack

A versatile 10S 21700 Li-ion battery pack engineered for electric bikes, scooters, and power tools. Delivers high energy density, robust safety, and customizable output ratings.

Quote

43.2V 21700 Li-ion Battery Pack

This 12S lithium-ion battery pack provides precise 43.2V output for advanced robotics, automation, and performance-critical applications. Available with UART/CAN-based smart BMS.

Quote

48V 21700 Li-ion Battery Pack

A popular 13S pack for electric mobility—ideal for e-bikes, trikes, and cargo systems. Built with premium 21700 cells for long range, high current, and safe operation.

Quote

52V 21700 Li-ion Battery Pack

Powerful 14S battery solution using 21700 cells, designed for high-speed e-bikes, industrial robots, and heavy-load systems. Supports CANBus/UART protocols and waterproof casings.

Quote

60V 21700 Li-ion Battery Pack

Built with a 16S configuration, the 60V 21700 battery pack offers reliable output for electric scooters, trikes, and industrial vehicles. Supports high current discharge with smart BMS integration for safe, long-range use.

Quote

72V 21700 Li-ion Battery Pack

High-voltage 20S lithium-ion battery pack using premium 21700 cells, ideal for electric motorcycles, off-road e-bikes, AGVs, and industrial robots. Delivers up to 84V when fully charged, with optional smart BMS for safe, high-power applications.

Quote
18650 vs 21700 – Extended Technical Comparison
18650 vs 21700 Battery Packs – Extended Technical Comparison
Metric 18650 Pack 21700 Pack Notes
Cell size Ø18×65 mm Ø21×70 mm 21700 is ~35% larger in volume, enabling higher capacity per cell.
Typical single-cell capacity 2.5–3.5 Ah 4.0–5.8 Ah Samsung 50E / 50GB are common high-capacity 21700 examples.
Weight per cell ~45 g ~65–70 g 21700 is heavier but offers more Wh per gram overall.
Gravimetric energy density ~150–220 Wh/kg ~180–260 Wh/kg Depends on cathode chemistry (NMC/NCA).
Continuous discharge (per cell) 10–20 A (high-power up to 30 A) 15–40 A (high-power up to 45 A) 21700 provides more headroom for e-bikes and power tools.
Cycle life 500–1,000 cycles 600–1,200 cycles At the same DoD, 21700 typically lasts longer.
Pack design More parallels; more weld points Fewer parallels; fewer welds Fewer cells simplify assembly and reduce failure points.
Thermal management Smaller surface area; denser layout Larger surface; better heat spreading 21700 runs more stable at higher loads with proper design.
Applications Laptops, medical, compact packs E-bikes, scooters, power tools, ESS 21700 is becoming mainstream for mobility and storage.
Market maturity Very mature; broad supply Rapidly growing; stabilizing supply 18650 is established but often replaced by 21700 in new designs.
Cost per Wh Lower Slightly higher 21700 cost/Wh continues to drop as adoption increases.

FAQ: 21700 Battery Packs for OEM Projects

21700 cells are larger and offer higher energy density than 18650, making them ideal for applications that require longer runtime, fewer cells, or better thermal management.
Yes. We support A-grade 21700 cells from brands like Samsung, LG, EVE, and Lishen. You can specify your preferred brand or let us recommend one based on your cost–performance needs.
Absolutely. We offer both hardware and smart BMS options with support for CAN, UART, RS485, Bluetooth, and custom firmware integration.
UN 38.3 is required for transport. Depending on the market, you may also need CE (EU), UKCA (UK), IEC 62133, MSDS, RoHS, or UL. We provide full support.
  • Samples: 7–12 working days
  • Mass production: 15–25 days
Lead time may vary based on complexity, cell availability, and customization level.
Yes. We offer small-batch prototyping (usually 5–100 pcs) to help you test form, fit, and function before scaling up.
Yes. We provide custom labels, logo printing, box packaging, and barcode integration to support your supply chain and brand visibility.
Include target voltage, capacity, discharge current, size limits, connector type, BMS protocol, certification needs, and annual quantity estimates.

A Complete Sourcing Guide for OEM 21700 Li-ion Battery Packs

From cell selection to compliance, this guide helps B2B buyers customize reliable 21700 battery packs for global applications.

Table of Contents

Chapter 1

What Makes 21700 Li-ion Battery Packs Ideal for OEM Projects?

In recent years, 21700 lithium-ion battery packs have gained widespread adoption in OEM applications across e-mobility, automation, medical, and industrial sectors. Compared to the traditional 18650 format, 21700 cells offer higher energy density, improved thermal performance, and longer cycle life, making them a preferred choice for B2B buyers with performance-critical requirements.

For businesses sourcing custom lithium battery packs, 21700 cells strike a practical balance between size, power, and efficiency. Whether you’re developing an electric bike, a delivery robot, or a smart medical device, a well-designed 21700 battery pack can help you:

  • Reduce battery footprint while extending runtime

  • Handle higher discharge currents for power-hungry systems

  • Improve thermal stability and reduce failure risks

  • Enable long-term durability in demanding environments

By partnering with a manufacturer that specializes in custom 21700 battery packs, OEM buyers gain the flexibility to tailor specifications—voltage, capacity, BMS protocol, housing, and even connector types—to meet exact system requirements.

Chapter 2

When Does a 21700 Pack Make More Sense Than 18650?

While both 18650 and 21700 lithium-ion cells are widely used in custom battery packs, each format serves different needs. For many OEM projects, 21700 battery packs are the better choice—especially when power density, efficiency, and long-term cost-performance are priorities.

Here’s when switching to a 21700 Li-ion pack makes more business and technical sense:

When Your Product Requires Higher Energy in Limited Space 

21700 cells offer approximately 35–50% more capacity per cell than 18650, reducing the total number of cells required to achieve the same output—perfect for space-constrained designs like compact e-bikes, drones, or handheld industrial tools.

 

When You Need Better Heat Management Under High Load

With a larger surface area and lower internal resistance, 21700 cells perform better under high current discharge, resulting in lower heat generation and improved safety margins—ideal for robots, mobility devices, or power tools that draw continuous current.

 

When You Want to Simplify Pack Design and Reduce Component Count

Fewer cells mean fewer weld points, tabs, and potential failure points. This leads to faster assembly, lower manufacturing costs, and higher structural stability over time—critical in long-life OEM products.

 

When Battery Lifecycle Is a Major Cost Factor

With greater capacity and better thermal control, 21700 battery packs often last longer per charge cycle, which translates into fewer replacements, lower TCO (total cost of ownership), and better user experience in field-deployed systems.

 

If your project involves long-range, high-drain, or heat-sensitive applications, a custom 21700 Li-ion battery pack may provide better overall performance, lifecycle economics, and product reliability than 18650.

Chapter 3

Common Voltage Configurations & Application Matching

Choosing the right voltage configuration is critical to how your 21700 battery pack performs in the field. At Junda, we offer custom 21700 Li-ion packs across a wide range of voltage options—each designed to meet specific power, runtime, and size requirements in real-world applications.

Below is a breakdown of our most requested voltage configurations and their typical B2B use cases:

Voltage Configuration Typical Application
11.1V 3S Medical monitors, handheld devices, IoT sensors
14.8V 4S RC systems, low-power robotics, portable electronics
22.2V 6S Drones, power tools, mobile scanners
24V 7S AGV drives, medical pumps, industrial controllers
36V 10S Electric bikes, scooters, warehouse robots
43.2V 12S Performance tools, autonomous carts, smart machinery
48V 13S E-mobility vehicles, delivery trikes, marine gear
52V 14S High-speed e-bikes, off-road scooters, robotics
60V 16S Electric mopeds, utility scooters, robotic arms
72V 20S Electric motorcycles, heavy AGVs, surfboards

How to Choose the Right Voltage?

When selecting voltage, consider:

  • Motor or device voltage rating (usually ±10% tolerance)

  • Required torque or output power

  • Pack size and weight limitations

  • Runtime expectations per charge

  • Thermal and enclosure design constraints

📌 Tip: Don’t just copy what competitors use—align the battery specs with your device’s actual power curves and load profile. Our engineering team can help you analyze requirements during the design phase.

Chapter 4

What Can Be Customized in a 21700 Battery Pack?

One of the biggest advantages of choosing a custom 21700 battery pack is flexibility. Unlike off-the-shelf batteries, OEM packs can be engineered around your product’s exact voltage, current, safety, and integration needs. This not only enhances performance but also ensures compliance with your mechanical, electrical, and regulatory requirements.

Here are the main customization options you can expect when working with a professional lithium battery pack supplier:

1. Cell Brand and Grade

You can specify A-grade 21700 cells from trusted brands such as Samsung, LG, Lishen, EVE, or select cost-efficient alternatives for secondary markets. All cells can be matched by capacity, resistance, and production date to ensure uniform pack behavior.

2. Voltage, Capacity & Configuration

  • Choose your ideal voltage (e.g., 36V, 48V, 72V)

  • Define capacity targets via series/parallel layout (e.g., 13S4P, 20S5P)

  • Match the output power and runtime with your load profile

3. BMS Type and Protocol

We support:

  • Basic BMS: Overcharge/discharge, short-circuit, temp protection

  • Smart BMS: Advanced features like CANBus, UART, RS485, remote diagnostics, Bluetooth app monitoring

You may even request specific IC or MOS brands to comply with procurement or certification needs.

4. Connectors & Wiring

You can select from:

  • XT60, XT90, Anderson, Molex, or custom terminal blocks

  • Silicone or PVC wiring with your preferred gauge and length

This ensures your pack connects seamlessly to your controller or motor system.

5. Casing and Enclosure

Options include:

  • PVC shrink-wrap for internal use or compact devices

  • Plastic or aluminum housings for structural protection

  • IP-rated waterproof enclosures for outdoor and rugged environments

6. Labeling & Packaging

Your logo, model number, QR code, and warning labels can be printed or engraved. You can also customize box design, padding, and barcode systems for retail, industrial, or fulfillment logistics.

📌 Pro Tip for Buyers: Always define your custom needs clearly at the RFQ stage. Share schematics, performance requirements, or physical constraints to speed up DFM (design for manufacturability) and avoid design loops.

Chapter 5

How to Package and Protect 21700 Packs for Your Industry

No matter how well a battery pack is engineered, poor packaging or inadequate protection can lead to premature failure, certification issues, or even safety risks during shipping and use. That’s why professional 21700 pack suppliers offer multiple packaging and protection options—each optimized for the environment, application, and logistics channel you’re targeting.

Here’s how we typically protect and deliver 21700 battery packs:

Enclosure Options Based on Use Case

 

Enclosure TypeDescriptionTypical Application
PVC Shrink WrapLightweight and space-saving. Suitable for internal installations where housing is already provided.E-bikes (internal), robots, testing samples
Plastic CasingCustom-molded for shape and insulation. Adds mechanical strength.Electric tools, light mobility
Aluminum HousingDurable, heat-dissipating, EMI-resistant. Available in custom shapes.Medical, industrial robots, EVs
IP65/IP67 Waterproof CaseSealed against dust and water ingress. Ideal for outdoor and marine use.Delivery vehicles, surfboards, agriculture

 

Shipping Packaging and Internal Protection

All packs are:

  • Wrapped with anti-static film

  • Secured in foam or molded trays

  • Packed in UN38.3-compliant outer cartons with lithium battery warning labels

  • Optionally vacuum-sealed for export

We also support custom export packaging, including:

  • Palletized shipments

  • Drop-tested cartons

  • QR-coded labels for warehouse integration

 

Thermal, Impact, and Vibration Protection

For sensitive environments (e.g., drones, high-vibration tools), we can add:

  • Silicone thermal pads

  • Foam spacers between cells

  • Internal epoxy reinforcement for impact resistance

 

📌 Tip for Buyers: Inform your supplier of the final installation environment and shipping destination. Battery casing, thermal protection, and labeling may need to comply with local safety regulations (e.g., IEC, DOT, DG shipping).

Chapter 6

How to Communicate Specifications with Your Battery Supplier

Clear communication is critical when sourcing a custom 21700 battery pack. Unlike off-the-shelf solutions, OEM battery packs require alignment across multiple technical and operational parameters. The more precise your input, the faster your supplier can deliver accurate designs, quotes, and prototypes.

Here’s how to prepare and communicate your requirements effectively:

Start with a Basic Specification Sheet (or Template)

Include the following minimum information in your RFQ or initial inquiry:

ParameterDescription
Voltage (V)Nominal voltage of the system (e.g., 48V, 72V)
Capacity (Ah)Desired runtime capacity, e.g., 20Ah
Discharge CurrentContinuous and peak load requirements (e.g., 30A continuous / 60A peak)
Dimensions or Size LimitationsTarget max dimensions or shape constraints
Connector TypeXT60, Anderson, Molex, or custom plug
BMS ProtocolBasic or smart (CANBus, UART, RS485)
EnvironmentIndoor / outdoor, waterproofing, vibration level
Certifications RequiredUN38.3, MSDS, IEC 62133, RoHS, etc.

2. Provide Visual References Whenever Possible

  • Mechanical drawings or housing CAD files (STP/DWG)

  • Photos of current or legacy batteries for compatibility reference

  • Wiring diagrams or load profile charts if custom load behavior is expected

🎯 Tip: Even a rough sketch or annotated photo can reduce back-and-forth clarification.

 

3. Clarify Application and Use Case

Let the supplier know:

  • What device or system this battery is for

  • Expected operating hours per day / charge cycles

  • Any regulatory market (EU, US, etc.)

  • Special conditions like shock, temperature, or altitude exposure

4. Ask for DFM Support (Design for Manufacturability)

Experienced suppliers can help optimize:

  • Internal layout for better heat management

  • Cell selection based on your cost–performance balance

  • Mechanical casing that fits your device housing perfectly

5. Confirm Production & Delivery Expectations

Specify:

  • Whether you need prototype samples first (and how many)
  • Estimated annual quantity or order size range
  • Required lead time or launch date
  • Preferred shipping terms (EXW, FOB, DDP)


The more details you provide upfront, the faster your project can move from concept to delivery—with fewer revisions, lower risks, and better cost control. A professional supplier will gladly work with your team to finalize specs through DFM and pilot runs.

Chapter 7

Typical Quality Assurance Workflows to Expect

For B2B buyers, especially in high-risk applications like e-mobility, robotics, or medical devices, reliability is non-negotiable. That’s why experienced lithium battery pack suppliers implement structured quality assurance workflows to validate safety, consistency, and performance—long before your packs are shipped.

At Junda Battery, every 21700 pack goes through the following QA stages: 

 1. Incoming Cell Inspection & Matching 

  • Check voltage, capacity, resistance, and batch consistency

  • Only matched cells (same lot, same grade) are used in one pack

  • Cell barcodes and batch data are digitally tracked for traceability

2. Assembly Line QA

  • Spot or laser welding is visually inspected for uniformity

  • BMS is tested for firmware accuracy and hardware integrity

  • Connectors are torque-tested and visually checked

3. Pre-Shipment Functional Testing

Each completed pack undergoes:

  • Capacity test (discharge under rated load)

  • Charge & discharge cycle simulation

  • Internal resistance check

  • Short-circuit and overcurrent protection validation

  • Temperature monitoring under load

 All results are logged and traceable via serial number or project code.

4. Aging & Soak Testing (Optional for Volume Orders)

For large-scale or mission-critical deployments, we offer:

  • 48–72 hour charge/discharge cycling under simulated operating conditions

  • Environmental chamber testing (temperature, vibration, humidity)

  • Burn-in detection for early component failure

5. Final QC & Labeling

  • Surface, barcode, and label checks

  • Certification and documentation review (UN38.3, MSDS, etc.)

  • Final pass/fail status before packing

Tip for Buyers: Ask for a QA checklist or sample report when comparing suppliers. A solid testing workflow is a sign of long-term quality—not just first-batch polish

Chapter 8

Compliance & Certification Essentials for Global Markets

If your custom 21700 battery packs are destined for international markets—whether powering e-bikes in Europe or robotics in the U.S.—compliance is mandatory. Certification ensures product safety, legal shipping, and smooth customs clearance. Skipping this step can lead to shipment delays, legal penalties, or customer rejections.

Here are the most common compliance requirements by region and use case:

Certification Purpose Applies To
UN 38.3 Mandatory for air & sea transport of lithium batteries Global logistics, all custom battery packs
MSDS / SDS Chemical safety documentation for shipping and handling Global logistics, B2B buyers, forwarders
IEC 62133 End-product battery safety compliance EU, India, Asia (consumer/portable devices)
RoHS / REACH Environmental compliance—restricted substances EU, UK, eco-conscious brands
UL 2271 / UL 2054 Optional safety standard for light EV and commercial packs USA / North America (scooters, e-bikes, tools)

Certifications may vary by project. We support both in-house and third-party testing based on your target market.

Chapter 9

Application Scenarios for 21700 Battery Packs

Thanks to their higher energy density, longer cycle life, and better heat control, 21700 battery packs are widely used across industries that demand both performance and reliability. From mobility and logistics to industrial automation, here are the most common B2B application areas:

Electric Bikes and Scooters

21700 battery packs are widely used in e-bikes and scooters due to their higher energy density and long cycle life. They support 36V, 48V, and 52V systems, making them ideal for urban commuting, long-distance riding, and off-road power delivery.

Cordless Power Tools

For drills, cutters, and other portable tools, 21700 packs offer high discharge performance in a small footprint. Fewer cells are needed compared to 18650, reducing weight while maintaining high output.

AGVs and Warehouse Robotics

In smart logistics, 21700 packs provide reliable power for AGVs and AMRs. Their compact size, smart BMS compatibility, and long runtime make them suitable for 24/7 industrial operations with minimal downtime.

Medical Devices and Equipment

Medical carts, portable diagnostics, and mobile imaging units benefit from the safety and stability of 21700 packs. They can be customized to meet IEC 62133, UN38.3, and other compliance needs for international healthcare markets.

Chapter 10

Tips to Choose the Right 21700 Battery Supplier

Not all lithium battery suppliers are created equal. While many can assemble a pack, few have the engineering depth, certification experience, and quality discipline required for OEM-grade 21700 battery solutions.

Here’s what to look for when selecting your long-term battery manufacturing partner:

1. Technical Capability Over Price

  • Can they recommend the right cell chemistry and configuration based on your load profile?

  • Do they offer smart BMS integration and support protocols like CANBus or UART?

  • Can they customize pack shape, connectors, and casings based on your device constraints?

💡 Ask for previous engineering case studies or samples—not just price sheets.

2. In-House QA Process (Not Just Assembly)

  • Do they conduct cell sorting, resistance balancing, and cycle testing?

  • Can they show you their aging test logs or inspection reports?

  • Do they provide batch traceability and serial number tracking?

A factory without structured QA is a gamble—especially on large orders.

3. Certification Readiness

  • Do they already have UN 38.3, MSDS, IEC, or CE documentation?

  • Are they familiar with your destination market’s compliance rules?

🔍 Suppliers who delay certification are often unfamiliar with international trade protocols.

4. Responsive Communication & Engineering Support

  • Do you get answers within 24 hours, especially during sampling?

  • Are you communicating with engineers or just sales reps?

  • Will they proactively raise DFM suggestions?

Strong teams help reduce miscommunication, shorten sampling cycles, and lower your risk.

5. Scalable Production & Reliable Lead Times

  • Can they deliver stable output from sample to mass production?

  • Do they have backup plans for cell sourcing or BMS components?

  • Are they experienced with OEM and ODM workflows?

Final Tip: Ask for a pilot batch. The first 50–100 pcs will tell you everything about their build quality, packaging, and process control.

Chapter 11

Summary

Custom 21700 battery packs offer high energy density, longer cycle life, and flexible configurations for demanding OEM applications. To source them effectively, B2B buyers should focus on clear specifications, compliance requirements, and choosing a reliable, engineering-driven supplier.

We’re committed to delivering reliable custom battery solutions—backed by expert support and clear quotations.

Get a Quote

Why Choose Junda As Your Custom Battery Pack Manufacturer?

With more than a decade of experience, Junda delivers precision-engineered lithium battery packs tailored for your unique applications. Here’s what makes us a trusted partner for global B2B clients:

Our Engineering Expertise

At Junda, our engineering team is led by a senior battery architect with 15+ years of hands-on experience at CATL, BYD, and other industry leaders. Backed by a cross-functional team of 6 engineers, we provide full-cycle development from design and simulation to testing and certification. We’ve completed over 1,000 custom battery pack projects across sectors like eMobility, energy storage, medical devices, and industrial tools—always focusing on safety, reliability, and performance.

Our Quality Assurance System

Junda operates under a strict ISO 9001:2015-certified quality management system, overseen by our QA director and implemented across every department. From incoming cell inspection to final pack aging tests, every step is digitally tracked and traceable. Our system ensures stable supply chain sourcing, controlled assembly processes, and compliance with industry benchmarks such as UN38.3, CE, and IEC 62133.

Our Assembly & Integration Process

Junda’s battery pack assembly process integrates mechanical, electrical, and thermal design tailored to your use case. Our capabilities include IP67/IP68 waterproof housing, high-discharge BMS systems, CAN/RS485 communication protocols, and reinforced designs for vibration or extreme environments. We conduct cell sorting, welding, insulation, balancing, and aging tests in-house to ensure consistent performance and longevity.

Our End-to-End Support

From your first inquiry to final delivery, we provide responsive, multilingual support backed by a dedicated sales and engineering team. We guide clients through technical evaluation, prototyping, compliance, and logistics—ensuring a transparent, stress-free experience. Whether you need an urgent sample or a long-term OEM solution, we’re here to make your battery development process efficient and reliable.

Simple 3 Steps Process

Submit Your Requirements

Share your voltage, size, application, and quantity needs—we’ll assess your project quickly.

Confirm Specifications

Our engineers will optimize the design, confirm details, and provide samples if needed.

Production & Delivery

Once approved, we start production and arrange fast, secure shipping to your destination.

Get Free Quote

Need a custom lithium battery pack? Just send us your specs—we’ll help you choose the right voltage, case, and configuration for your application.

Custom Battery Packs Made Easy

At JUNDA, we make customization easy. Follow these 3 simple steps to start today:

🔧 Step 1: Tell Us What You Need

Send your battery requirements — voltage, capacity, casing type, or upload drawings/photos.

💡 Step 2: Get Solution & Quote

We’ll evaluate your specs and recommend the best configuration. A detailed quote will be sent within 24 hours.

🚚 Step 3: Confirm & Produce

After approval and deposit, we start production. Shipping and tracking will be arranged for fast, secure delivery.