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21700 2S1P 5000mAh 5C Robotics Battery Pack
The 21700 2S1P 7.2V 5000mAh 5C Li-ion Battery Pack is a rechargeable cylindrical lithium-ion battery pack designed for applications that require higher energy density, stable discharge performance, and reliable medium-rate power output. Built with Grade-A 21700 cells in a 2S1P configuration, this battery pack provides 7.2V nominal voltage, 5000mAh capacity, and 5C discharge capability for robotics, industrial handheld devices, portable equipment, and custom electronic systems.
As a professional custom lithium battery manufacturer, LithoTop provides OEM/ODM 21700 battery pack solutions with customized PCM protection, connectors, wire lengths, NTC, labels, insulation design, shrink wrap, and packaging.
Additional information
| Product Type | Lithium Ion Battery Pack |
|---|---|
| Model number | 21700-2S1P |
| Voltage (Nominal) | 7.2V |
| Charge Voltage | 8.4V |
| Capacity (Nominal) | 5000mAh |
| Dimensions | Max. 23*43*73mm |
| Constant Discharge Current | Max. 5C, 25A |
| Working Temperature | -20°C~60°C |
| Certification | ISO9001/ISO14001 |
Professional Lithium Ion Battery Solutions
LithoTop designs and manufactures premium lithium-ion battery solutions using Grade A cells and self-developed BMS technology. From prototype to mass production, we provide customized OEM & ODM battery packs with superior safety, long cycle life, and reliable performance for robotics, medical devices, wearable electronics, IoT, energy storage, and industrial applications.
The 21700 2S1P 7.2V 5000mAh Li-ion battery pack is designed for devices that need longer runtime and stronger output than smaller cylindrical or pouch battery solutions. Compared with 18650 battery packs, 21700 cells can provide higher capacity and better energy utilization within a compact structure, making them suitable for modern portable and industrial equipment.
With a 2S1P configuration, this battery pack delivers a higher operating voltage than single-cell battery packs, helping improve system efficiency for motor-driven devices, control boards, sensors, communication modules, and portable power systems. The 5C discharge rate supports stable medium-to-high current output for applications requiring short acceleration, motor start-up, or continuous working loads.
LithoTop applies strict production control during cell selection, voltage matching, capacity testing, internal resistance testing, spot welding, BMS assembly, aging inspection, and final performance verification. These processes help ensure stable quality, reliable safety protection, and batch consistency before shipment.
- 21700 High Energy Density Cells
Provides higher capacity and better energy utilization compared with many smaller cylindrical cell options. - 2S1P 7.2V Battery Pack Design
Suitable for devices requiring higher voltage than a single-cell lithium battery solution. - 5000mAh Long Runtime Capacity
Supports extended operating time for portable and industrial electronic devices. - 5C Discharge Capability
Provides stable medium-rate output for motors, controllers, sensors, and power modules. - Grade-A Cylindrical Li-ion Cells
Ensures better consistency, stable cycle performance, and reliable battery quality. - Strict Cell Matching
Voltage, capacity, and internal resistance are matched to improve pack consistency and safety. - Custom Battery Pack Assembly
Supports customized connectors, cable length, insulation structure, casing, and packaging.
- Service robots
- Educational robotics platforms
- Industrial handheld terminals
- Portable inspection equipment
- Wireless monitoring devices
- Medical portable devices
- Security equipment
- IoT gateway systems
- Portable measuring instruments
- Custom electronic equipment
Battery Cell Choices
LithoTop offers a complete range of cylindrical lithium-ion cells to meet different power, capacity, and performance requirements. Our engineering team helps customers select the most suitable cell based on energy density, discharge current, cycle life, and application environment.
| Cell Type | Typical Capacity | Key Advantages | Typical Applications |
|---|---|---|---|
| 14500 | 600–1200mAh | Compact size, lightweight | Portable electronics, medical devices, flashlights |
| 18650 | 1800–3500mAh | Cost-effective, mature technology | Robotics, IoT devices, industrial equipment |
| 21700 | 4000–6000mAh | Higher capacity and energy density | AGVs, energy storage, power tools, e-mobility |
| 26650 | 3000–6000mAh | High discharge capability | Industrial equipment, backup power systems |
Battery Assemble
Flexible Lithium-Ion Battery Pack Customization
Every application has unique power requirements. At LithoTop, we provide complete custom lithium-ion battery pack solutions designed around your product’s voltage, capacity, size, discharge rate, connector type, and communication requirements. Whether you need a single cylindrical cell, a protected battery, or a fully assembled battery pack, our engineering team can customize every component to perfectly match your device.
Customization Options
- Battery Cells: 18650, 21700, Li-ion cylindrical cells
- Voltage: 3.6V, 3.7V, 7.2V, 7.4V, 10.8V, 11.1V, 14.4V, 14.8V, 22.2V, 24V, 36V, 48V and more
- Capacity: From mAh to over 50Ah according to your application
- Battery Configuration: 1S–20S, multiple series and parallel
- PCM / BMS: Hardware BMS, Smart BMS
- Connectors: JST, Molex, XT30, XT60, and customized connectors
- Cables: Customized wire length, AWG size, silicone or PVC cables
- Packaging: Heat shrink, PVC, plastic or aluminum case
- Branding: Custom labels, laser printing and OEM logo service
With years of experience in custom lithium-ion battery manufacturing, LithoTop helps customers shorten development cycles, reduce engineering costs, and deliver reliable battery solutions for industrial, medical, consumer electronics, robotics, IoT, security systems, power tools, and many other demanding applications.
Complete Custom Lithium-Ion Battery Pack Solutions
LithoTop provides comprehensive OEM and ODM lithium-ion battery solutions, covering every stage from premium battery cells to fully customized battery packs. Whether your project requires a single cylindrical cell, a protected battery with PCB, or a complete battery pack with connectors and housing, our engineering team delivers reliable solutions tailored to your exact application.
We offer flexible customization services including battery cell selection, BMS design, PCB protection circuits, wire harnesses, connectors, heat-shrink packaging, and complete battery pack assembly. Every battery pack is engineered to meet specific requirements for voltage, capacity, discharge rate, dimensions, communication protocols, and safety standards.
To ensure maximum compatibility, LithoTop supports a wide range of industry-standard connectors including JST, Molex, XT30, XT60, SM, PH, XH, KET, and many other customized interfaces. Our hardware and software engineering teams also develop custom protection PCBs and smart BMS solutions with overcharge, over-discharge, over-current, short-circuit, temperature protection, cell balancing, Bluetooth, CAN Bus, SMBus, UART, and other intelligent communication functions.
With strict incoming material inspection, automated production equipment, and 100% functional testing, every custom lithium-ion battery pack is manufactured to deliver high safety, stable performance, long cycle life, and reliable operation for demanding applications worldwide.
Our Customization Includes
- Premium 18650 & 21700 Lithium-ion Cells
- Hardware BMS & Smart BMS Design
- Custom PCB Protection Circuit Development
- Wire Harness & Connector Customization
- Heat Shrink & Battery Housing Assembly
- Battery Pack Mechanical Design
- OEM Logo & Laser Printing
- Communication Protocol Integration: CAN Bus / UART
- Certification Support: UN38.3, CE, RoHS, IEC62133, UL
- One-Stop OEM & ODM Battery Manufacturing
Customer Development Story
Discover how we helps global customers solve real-world battery challenges through customized lithium battery solutions.
01 – Service Robot Project from the United States
A US robotics company was developing a compact indoor service robot for commercial environments. The robot needed to power drive motors, sensors, a communication module, and a control board in a limited internal space. Their previous 18650 battery solution could support normal operation, but runtime was not enough for longer daily service cycles.
The customer contacted LithoTop because they needed a higher-capacity cylindrical battery pack without significantly increasing the battery compartment size. LithoTop reviewed the robot’s motor load, peak current, standby current, charging method, installation space, and expected operating time.
After evaluation, LithoTop recommended the 21700 2S1P 7.2V 5000mAh 5C Li-ion battery pack. Our engineering team judged that 21700 cells would provide better energy density than the customer’s previous solution, while the 2S1P structure matched the robot’s voltage platform. The 5C discharge capability supported motor start-up and short peak-load conditions.
During sample development, LithoTop optimized the BMS protection design, nickel strip structure, wire length, connector type, and insulation layout. Sample testing included motor load simulation, runtime testing, voltage stability checking, charging compatibility testing, temperature monitoring, and installation fit verification.
Before mass production, both teams confirmed samples, connector specifications, pack dimensions, labeling details, and batch inspection standards. After launch, the robot achieved longer operating time and more stable power behavior during daily use. For the customer, this reduced charging interruptions and improved the commercial reliability of their service robot platform.
02 – Industrial Handheld Inspection Device Project from Germany
A German industrial equipment company was developing a handheld inspection device used by technicians for factory maintenance and field diagnostics. The device included a display, sensor module, wireless communication function, and data processing board. The main challenge was finding a battery pack that could provide stable voltage and enough runtime while fitting into a narrow handle structure.
The customer approached LithoTop after testing several standard battery packs that were either too large or unable to support the required working time. They needed a custom battery manufacturer that could evaluate mechanical structure, discharge performance, and production reliability together.
LithoTop analyzed the device’s working current, communication current peak, charging circuit, operating environment, cable routing, and handle space. Based on the analysis, LithoTop recommended the 21700 2S1P 7.2V 5000mAh 5C Li-ion battery pack. The 21700 cell format provided strong capacity in a compact cylindrical layout, while the 2S voltage platform supported the customer’s system design.
During prototype development, LithoTop adjusted the pack arrangement, connector direction, wire length, BMS size, and outer insulation protection to improve assembly inside the handheld device. Sample batteries were tested through continuous runtime simulation, wireless transmission pulse testing, charge-discharge cycling, vibration checking, and temperature behavior evaluation.
Before mass production, the customer confirmed final dimensions, approved sample performance, connector durability, packaging method, and incoming quality standards. LithoTop then controlled production according to the approved golden sample.
The final battery solution helped the device operate more reliably during long inspection tasks and reduced the need for frequent charging. For the customer, this improved technician efficiency, reduced field maintenance concerns, and made the product more competitive in industrial inspection markets.
Why Choose LithoTop for 21700 Li-ion Battery Pack Solutions?
21700 Li-ion battery packs require professional engineering control from cell selection to final pack assembly. For a reliable 2S1P battery pack, performance depends on cell quality, matching consistency, BMS design, nickel strip selection, spot welding quality, wire specification, connector reliability, and final aging inspection.
LithoTop supports customers from sample design to mass production with customized battery pack development, Grade-A cell sourcing, strict production inspection, and flexible OEM/ODM assembly. Our engineering team can help evaluate working current, installation space, charging method, protection requirements, connector type, and real application conditions before confirming the final battery solution.
Manufacturing Capability
LithoTop has strong lithium battery manufacturing capability, combining advanced production equipment, experienced engineering teams, strict quality control, and flexible OEM & ODM services. From cell selection to final battery pack assembly, every process is carefully managed to ensure stable quality, reliable performance, and consistent mass production.
120,000+ Daily Production Capacity
LithoTop supports stable large-scale production for LiPo batteries, Li-ion battery packs, LiFePO₄ batteries, and customized battery solutions, helping customers meet both small-batch development and mass production needs.
Advanced Battery Pack Assembly Lines
Our production lines are equipped for cell sorting, spot welding, soldering, PCM/BMS assembly, insulation protection, labeling, aging, and final packaging, ensuring efficient and standardized battery production.
In-House BMS & PCB Production
LithoTop has its own BMS manufacturing facility with 10 production lines, supporting 1S–25S, 1A–300A battery protection solutions for Li-ion, LiFePO₄, and sodium battery packs.
Automated Cell Matching
Before battery pack assembly, cells are carefully matched by voltage, capacity, and internal resistance to improve battery consistency, safety, and cycle life.
Precision Welding Technology
We use professional spot welding and nickel strip connection processes to ensure strong electrical conductivity, low resistance, and stable high-current performance.
Strict In-Process Quality Control
During production, our quality team monitors key processes including welding quality, PCM/BMS connection, insulation, voltage consistency, appearance, and structural assembly.
Comprehensive Testing Capability
Each battery undergoes voltage testing, internal resistance testing, capacity testing, charge/discharge testing, aging tests, and final inspection before shipment.
OEM & ODM Customization
LithoTop supports customized voltage, capacity, battery structure, discharge current, connectors, wire length, housing, labels, packaging, and communication protocols.
Production Process
- Incoming Material Inspection: Cells, PCM/BMS, wires, connectors, nickel strips, and packaging materials are inspected before production.
- Cell Sorting & Matching: Cells are matched by voltage, capacity, and internal resistance to ensure pack consistency.
- Battery Pack Assembly: Cells are connected through professional welding, soldering, and insulation processes.
- PCM/BMS Integration: Protection boards are installed and tested according to battery safety requirements.
- Aging & Performance Testing: Batteries are tested under charging and discharging conditions to verify stability.
- Final Inspection: Appearance, labeling, voltage, capacity, polarity, and packaging are checked before shipment.
- Safe Packaging & Delivery: Mass Production Batteries are packed according to transportation requirements with support for UN38.3 and MSDS.
Quality Assurance
LithoTop follows strict quality management throughout the entire manufacturing process. Every battery is tested before shipment to ensure true capacity, stable voltage output, low internal resistance, safe operation, and reliable long-term performance.
Why It Matters for Customers
With strong manufacturing capability and in-house BMS development, LithoTop helps customers reduce communication costs, shorten product development time, improve production consistency, and receive more reliable customized battery solutions from prototype to mass production.
More Customer Cooperation Cases
LithoTop has successfully delivered customized lithium-ion battery pack solutions to customers in more than 30 countries. From prototype development to mass production, our engineering team helps customers solve complex power challenges across industrial, medical, robotics, and energy storage applications.
AGV & Autonomous Mobile Robots
A European AGV manufacturer required a high-capacity lithium-ion battery pack with CAN communication, stable discharge performance, and long cycle life. LithoTop developed a customized 24V battery pack with an intelligent BMS, helping improve operating time and reduce maintenance costs.
Medical Diagnostic Equipment
A medical device company needed a compact battery pack with exceptional reliability and safety for portable diagnostic equipment. LithoTop engineered a customized lithium-ion solution using Grade A cells and an in-house BMS, ensuring stable power output and consistent performance throughout the product lifecycle.
Industrial Inspection Robot
An industrial automation customer required a lightweight, high-discharge battery pack capable of supporting continuous operation in demanding environments. LithoTop provided a customized 21700 battery pack with intelligent protection, enabling longer runtime and enhanced operational efficiency.
Handling Precautions & Guidelines
Find answers to the most common questions about ordering, shipping, certifications, and working with lithotop as your battery partner.
After sample approval, all production parameters are standardized. Every production batch follows the same BOM, manufacturing process, and quality inspection procedures. Batteries undergo voltage, capacity, internal resistance, aging, and final performance testing before shipment to ensure consistency.
LithoTop provides custom lithium-ion battery packs using 15270, 14500, 18650, 21700, 26650 and other cylindrical cells. We support customized voltage, capacity, discharge current, connectors, communication protocols, housing, and BMS solutions based on your project requirements.
Yes. Our engineering team can evaluate your existing battery pack and recommend an equivalent or improved battery solution while maintaining the same dimensions, connector, communication protocol, and mechanical structure whenever possible. This helps reduce redesign costs, shorten qualification time, and ensure a smooth supplier transition.
Yes. LithoTop designs high-discharge lithium-ion battery packs with high continuous and peak discharge capability for AGVs, robots, drones, industrial automation, and power equipment. We can recommend the most suitable cell based on your power requirements.
Engineering samples are typically completed within 7–15 working days. Mass production usually requires 15–30 working days depending on battery complexity, material availability, and order quantity.
Our battery packs can support CE, RoHS, UN38.3, MSDS, IEC62133, CB, KC, and other international certifications depending on your market and application requirements.
MOQ depends on the battery configuration and customization level. We support prototype development, engineering samples, pilot production, and large-volume manufacturing to help customers throughout the product development process.
Please provide your required voltage, capacity, maximum discharge current, battery dimensions, connector type, communication requirements, operating environment, and expected application. Our engineers will recommend the most suitable battery solution.
Yes. LithoTop has an in-house BMS manufacturing facility capable of developing intelligent protection boards from 1S to 25S. We support CAN, SMBus, RS485, Bluetooth, UART, and other communication protocols.
LithoTop combines premium Grade A battery cells with our own BMS manufacturing capability, enabling us to provide complete battery solutions from a single supplier. This helps reduce communication costs, shorten development cycles, and ensure better compatibility between battery cells, protection systems, and customer applications.
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Our Factory Insight
LithoTop operates advanced lithium battery manufacturing facilities equipped with automated production lines, precision testing equipment, and strict quality control systems. From cell selection to battery assembly and final inspection, every process is carefully managed to ensure stable performance, reliable quality, and high production efficiency. With experienced engineers and strong OEM/ODM capability, we provide customized battery solutions for customers worldwide.
Global Certifications & Compliance Support
LithoTop provides comprehensive certification support for custom lithium batteries to help customers accelerate product development and global market entry. From prototype verification to mass production, our engineering team assists with battery compliance, transportation documentation, and international safety standards, reducing certification risks and shortening your project timeline.
Industry News Insight
Stay updated with the latest lithium battery industry news, product innovations, technology insights, and application trends from LithoTop. Explore expert articles, battery guides, and industry updates to learn more about custom lithium battery solutions, energy storage, UAV batteries, wearable device batteries, and advanced power technologies.
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