
Reliable Power for Every Flight: INR21700 Cylindrical UAV Battery
What Is an INR21700 Cylindrical UAV Battery?
INR21700 refers to a cylindrical lithium-ion cell format measuring approximately 21mm in diameter and 70mm in length. These cells can be assembled into battery packs with different series and parallel configurations to meet specific voltage, capacity, and structural requirements.
For UAV applications, battery selection involves more than nominal voltage and capacity. Discharge capability, pack weight, dimensions, thermal management, and electrical compatibility all influence the performance of the complete power system.
PKNERGY provides cylindrical UAV battery solutions for customers seeking practical battery configurations tailored to their aircraft design, operating requirements, and integration needs.
Key Features of INR21700 UAV Batteries
01 / CELL TECHNOLOGY
INR21700 Cylindrical Cells
A standardized cylindrical format supports organized pack layouts, structured cell interconnection, and flexible battery assembly.
02 / VOLTAGE OPTIONS
Multiple Voltage Platforms
Available voltage configurations include 21.6V, 43.2V, and other options within the 21.6V–50.4V range, subject to the specified model.
03 / PACK ENGINEERING
Reliable Pack Integration
Appropriate cell selection, interconnection, and pack design help support consistent operation and dependable power delivery.
Technical Data
INR21700 Cylindrical UAV Battery Specifications
Review the technical specifications of PKNERGY INR21700 cylindrical UAV battery packs, including available voltage configurations, rated capacity, discharge performance, and physical dimensions.
Battery Specification Table
Applications of INR21700 Cylindrical UAV Batteries
INR21700 cylindrical battery packs can be evaluated for UAV platforms that require a defined balance of energy capacity, power output, weight, and installation space. The final configuration depends on the aircraft’s electrical architecture and operating profile.
Consumer Drones
Battery configurations for compatible consumer UAVs with defined voltage, capacity, and weight requirements.
Aerial Photography
Power solutions assessed according to flight duration, camera equipment, and aircraft energy consumption.
Compact Multirotors
Configurable battery packs for multirotor platforms with specific power demands and mechanical constraints.
Application suitability should be confirmed against the selected cell’s discharge rating, total battery weight, thermal performance, and UAV system requirements.
OEM & ODM Services
Custom INR21700 UAV Battery Pack Development
Every UAV platform has different electrical and mechanical requirements. PKNERGY supports customized cylindrical battery pack development based on your target voltage, capacity, discharge current, available installation space, and integration needs.

Electrical Configuration
Voltage, capacity, cell arrangement, and continuous or peak current requirements.
Mechanical Integration
Battery dimensions, mounting arrangements, connectors, and wiring specifications.
Battery Management
BMS protection functions and monitoring or communication interfaces where required.
Share your technical requirements with our team to evaluate cell selection, pack architecture, and project feasibility.
How to Choose the Right INR21700 UAV Battery
Selecting the right UAV battery requires matching the complete battery pack to the aircraft’s operating conditions rather than considering voltage and capacity alone.
Confirm Voltage and Capacity
Check the aircraft’s voltage range, energy requirements, and target flight duration.
Evaluate Discharge Performance
Verify that the selected cells and complete pack can support continuous and peak current demands.
Check Weight and Dimensions
Ensure that the assembled battery pack fits the available space and stays within the aircraft’s weight limits.
Validate System Compatibility
Review charging requirements, protection functions, thermal behavior, and electrical compatibility before deployment.
Frequently Asked Questions
What is an INR21700 cylindrical battery?
INR21700 describes a cylindrical lithium-ion cell format with a nominal size of approximately 21mm by 70mm. Its actual capacity, discharge capability, and cycle life depend on the specific cell model.
What voltage options are available?
PKNERGY’s product information includes voltage platforms within the 21.6V–50.4V range, including 43.2V. Please refer to the specification table for the available configurations and model-specific details.
Can PKNERGY customize INR21700 UAV battery packs?
Customization can be evaluated according to voltage, capacity, discharge current, dimensions, connectors, wiring, and BMS requirements, subject to cell availability and engineering feasibility.
Are INR21700 batteries suitable for all drones?
Not every cylindrical cell is suitable for every UAV. The correct choice depends on the aircraft’s power demand, battery weight limits, installation space, and operating conditions.
What information is needed for a battery quotation?
Please provide the target voltage, capacity, continuous and peak current, battery dimensions, connector requirements, application, and estimated order quantity. An existing battery specification or aircraft electrical requirements can also help our team evaluate your project.

