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21700 Li-ion Battery Series

Built for Long Flight Time and Reliable Power Output
Custom Voltage, Capacity, Connector and Battery Pack Design Available

Get a Li-ion Batter Quote

Why Choose NewYenk 21700 Li-ion Battery Packs?

Higher capacity, longer runtime, and stable power for UAV and drone applications.

High-Capacity 21700 Cell Platform

The 21700 cylindrical cell format offers a higher-capacity foundation for drone battery packs, making it suitable for UAV platforms that need more stored energy within a controlled pack size.

Longer Flight Time

For inspection, mapping, aerial monitoring, and long-range UAV missions, flight endurance is often more important than short burst output. NewYenk 21700 Li-ion battery packs are built to extend operating time for these continuous-use applications.

Higher Energy Density

With strong energy storage in a relatively compact structure, li ion 21700 battery helps reduce the trade-off between capacity, installation space, and overall drone weight.

Stable Continuous Power Supply

During long flight cycles, stable power delivery is essential for maintaining system performance. NewYenk 21700 Li-ion battery packs provide consistent energy output for UAVs, RC models, and other mobile power systems.

21700 Li-ion Battery Applications for Long-Endurance UAV Power

Ideal for UAV platforms focused on extended flight time, reliable energy output, and efficient use of battery space.

Inspection Drones

Inspection Drones

For power line inspection, pipeline inspection, solar farm inspection, and industrial facility monitoring, drones often need to follow planned routes for a longer period of time. 21700 Li-ion battery packs help provide stable energy support for these continuous-flight inspection tasks.

Mapping and Survey UAVs

Mapping and Survey UAVs

Mapping drones require consistent power during route planning, aerial imaging, GPS positioning, and data collection. The higher-capacity foundation of 21700 Li-ion cells helps support longer working time for mapping, surveying, and terrain data collection.

Aerial Monitoring and Patrol Platforms

Aerial Monitoring and Patrol Platforms

For security patrol, environmental monitoring, forest monitoring, and border or coastal observation, UAVs need dependable power during long-duration monitoring tasks. 21700 Li-ion battery packs are suitable for applications that require extended operating time and stable discharge performance.

Long-Range Fixed-Wing and VTOL UAVs

Long-Range Fixed-Wing and VTOL UAVs

Fixed-wing and VTOL UAVs are often used for longer routes, wider coverage, and more efficient flight missions. A 21700 Li-ion battery pack can help balance energy capacity, pack size, and system weight for endurance-focused UAV designs.

Research, Testing, and Training Platforms

Research, Testing, and Training Platforms

For UAV development, flight testing, and training platforms, predictable power output and longer usable runtime are important for repeated testing and stable operation. 21700 Li-ion battery can provide reliable energy support for these non-racing, endurance-oriented power systems.

How to Choose the Right 21700 Li-ion Battery Pack

Compare voltage, capacity, configuration, discharge rate, and application needs to select a suitable 21700 battery pack for drones, UAVs, RC models, and high-voltage power systems.

ModelVoltageCapacityConfigurationDischarge RateRecommended Use
28.8V 5000mAh28.8V5000mAh8S1P10CLightweight drone / RC system
14.4V 25000mAh14.4V25000mAh5P4S10CLong runtime UAV / RC model
21.6V 20000mAh21.6V20000mAh4P6S10CUAV power system
43.2V 15000mAh43.2V15000mAh3P12S10CHigh-voltage drone battery pack

Our 21700 Li-ion Battery Pack meet international standards including CQC, UL, TÜV Rheinland, CB, CE, FCC, KC, RoHS, REACH, and UN38.3, ensuring compliance across global markets.

Custom 21700 Li Ion Battery Selection Guide

Match your 21700 li ion battery to the UAV's power demand, space limits, weight target, and expected operating time.

Voltage & Capacity Matching

Voltage & Capacity Matching

Choose the voltage and capacity based on drone power system, flight time target, and load requirement.

Pack Configuration & Discharge Demand

Pack Configuration & Discharge Demand

Match the series-parallel structure and 10C discharge performance with the required current and power output.

Size, Weight & Installation Space

Size, Weight & Installation Space

Balance battery capacity with pack weight, available battery compartment space, and overall flight stability.

21700 Li-ion Battery Series FAQs

Q1: Are 21700 li ion batteries suitable for drones and UAVs?

Yes. 21700 li ion batteries are suitable for UAV platforms that need longer runtime, stable energy output, and higher-capacity power support. They are commonly used in inspection drones, mapping UAVs, aerial monitoring platforms, and other long-endurance drone applications where continuous operation matters more than short burst power.

Q2: How do I choose the right voltage for a li ion 21700 battery?

The voltage should match the drone’s motor, ESC, flight controller, and overall power system design. Common battery structures may include 4S, 6S, 8S, 12S, or other series configurations, depending on the UAV platform, current demand, payload, and expected operating time.

Q3: Does a higher-capacity 21700 Li-ion battery pack always mean longer flight time?

Higher capacity can provide more stored energy and may help extend flight time, but it does not automatically guarantee longer endurance. Actual flight time also depends on drone weight, payload, motor efficiency, propeller design, flight speed, weather conditions, and battery installation. The best choice is usually a balanced solution between capacity, weight, and power demand.

Q4: What does 10C continuous discharge rate mean for a 21700 li-ion battery?

A 10C continuous discharge rate means the battery is rated to deliver continuous current based on 10 times its capacity under suitable operating conditions. For drone and UAV applications, this helps support stable power output during continuous flight, especially in long-duration missions where reliable discharge performance is important.

Q5: What is the difference between a 21700 Li-ion battery and a LiPo drone battery?

A 21700 Li-ion battery is usually selected for higher energy capacity, longer runtime, and stable continuous discharge. A LiPo battery is more commonly used when high burst output, fast throttle response, and lightweight racing performance are the main priorities. In simple terms, 21700 Li-ion batteries are better suited for endurance-focused UAVs, while LiPo batteries are often preferred for FPV racing and high-power flight.

Q6: Can NewYenk customize a 21700 li ion battery pack for UAV projects?

Yes. NewYenk can customize 21700 li ion battery pack solutions according to UAV project requirements. Customization can cover cell configuration, voltage range, capacity target, discharge performance, connector selection, cable layout, weight control, and structural design, helping the battery match the drone’s power system and installation space.

Q7: What information should I provide for a 21700 li-ion battery pack quote?

To receive a suitable recommendation, please provide the required voltage, target capacity, discharge current, battery compartment size, weight limit, connector type, application scenario, and expected flight time or working time. If available, sharing your drone model, motor power, payload weight, and current battery specification can also help NewYenk recommend a more accurate battery solution.