Cylindrical 21700 High-Power Cell
LinkData 65P
High-power cylindrical 21700 cell delivering 6.5 Ah capacity with 333 Wh/kg energy density and 52 A maximum discharge rate.
Overview
The LinkData INR21700S-65P is a high-power lithium-ion cylindrical 21700 cell designed for applications that demand sustained high current and high energy density. Released in 2026 and with the manufacturer based in China, this cylindrical 21700 cell delivers 6.5 Ah capacity and 23.4 Wh of energy at a nominal voltage of 3.6 V, with a maximum continuous discharge capability of 52 A, making it well suited to high-power systems operating under aggressive load profiles. Among the 21700 cylindrical cells in the About:Energy battery library, the LinkData 65P ranks 2nd of 97 for gravimetric energy density. Its 333 Wh/kg compares with a 21700 cylindrical median of 257 Wh/kg.
Key Features
High discharge rate: 52 A continuous (8.0 C)
Energy density: 333 Wh/kg
Power density: 2,667 W/kg
Cathode: Ni-based
Applications: aviation, motorsports, e-mobility
Technical Specifications from the Manufacturer
Parameter
Manufacturer
LinkData
Model
INR21700S-65P
Type
Li-ion
Form factor
Cylindrical 21700
Country of origin
China
Release year
2026
Nominal voltage
3.6
Energy capacity [Wh]
23.4
Capacity [Ah]
6.5
Gravimetric energy density [Wh/kg]
333
Gravimetric power density [W/kg]
2667
Max continuous discharge [A]
52
Volume [cm³]
25.7403
Mass [g]
70.2
Positive electrode (cathode)
Ni-based
Negative electrode (anode)
Value
Applications & Use‑Cases
The LinkData 65P is well suited to the following applications due to its cylindrical 21700 form factor and high power performance.
Aviation: Requires high specific energy for extended flight duration, high power-to-weight ratio for climb performance, and reliable operation across wide temperature ranges at altitude.
Motorsports: Demands sustained high discharge under competitive load profiles, rapid transient response for acceleration, and thermal stability to maintain performance during race conditions.
E-Mobility: Requires balanced energy and power density for range and acceleration, high cycle life for daily use, and robust calendar life to ensure long-term reliability.
General Applications: Suitable for applications requiring reliable lithium-ion performance with proven cycle life, consistent capacity delivery, and operational safety across diverse use cases.
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Performance & Model Data
Below are modelled performance metrics for the LinkData 65P across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access LinkData 65P constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not 65P data.)
Constant Current Temperature
Access LinkData 65P thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not 65P data.)
Pulse Power Behaviour
Access LinkData 65P pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not 65P data.)
Dynamic Profile Response
Access LinkData 65P mission profile simulations in Voltt to prove the pack holds up over a real duty cycle before you build it. (Chart shown is illustrative, not 65P data.)
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Case Studies
See how we helped McMurtry reduce cell evaluation time by 70% through data driven testing and modelling.
Motorsports
McMurtry Automotive: Faster cell evaluation
McMurtry Automotive used The Voltt and validated cell models to evaluate the transition from the Molicel P45B to P50B during early pack concept development.
Side by side modelling enabled rapid comparison of electrical and thermal behaviour, avoiding lengthy physical test campaigns. This approach reduced cell evaluation time by seven months, allowing the team to lock in cell selection and pack assumptions earlier while lowering technical risk and accelerating vehicle development.
Comparison with Related Cells
Compare the LinkData 65P with similar Cylindrical 21700 cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
LinkData
LinkData is a Chinese cylindrical lithium-ion cell manufacturer
LinkData is a Chinese battery manufacturer headquartered in Beijing, with cell production based in Zhuhai. The company builds cylindrical lithium-ion cells in the 21700 format alongside pack-level products, using nickel-based chemistry tuned for high continuous discharge. Its INR21700 series covers both high-capacity and high-rate variants, with the model suffix denoting rated capacity and discharge class. The cells are used in uncrewed aerial systems, power tools, light electric vehicles and telecommunications backup, where sustained current draw rather than cycle count sets the requirement. LinkData is one of a number of Chinese manufacturers pushing capacity and discharge rate upward within the fixed 21700 envelope.
Frequently Asked Questions
What is the capacity and voltage of the LinkData 65P?
The LinkData 65P has a nominal capacity of 6.5 Ah and a nominal voltage of 3.6 V, providing 23.4 Wh of energy per cell.
What is the maximum continuous discharge capability of the LinkData 65P?
The LinkData 65P supports continuous discharge rates up to 52 A, delivering exceptional power density of 2,667 W/kg.
How much does the LinkData 65P weigh and what is its volume?
The cell has a mass of 70.2 g and a volume of 25.7 cm³.
In which industries is the LinkData 65P commonly used?
The LinkData 65P is used across eVTOL, motorsports, drones, and e-mobility, applications that demand both high energy and power density.
How does the LinkData 65P compare with the Samsung 63E?
Comparing the LinkData 65P with the Samsung 63E: capacity 6.5 Ah against 6.3 Ah; maximum continuous discharge 52 A against 6.3 A. Both datasheets can be compared side by side in The Voltt.
What chemistry and format is the LinkData 65P?
The LinkData 65P is a cylindrical 21700 cell with a Ni-based cathode. It has a nominal voltage of 3.6 V and a volume of 25.7 cm³. Its full datasheet is free to view in The Voltt.
