Cylindrical 21700 High-Energy Cell
Panasonic NCR2170M
High-energy cylindrical 21700 cell delivering 5.02 Ah capacity with 258 Wh/kg energy density and 12 A maximum discharge rate.
Overview
The Panasonic NCR2170M is a lithium-ion cylindrical 21700 cell designed for applications that demand high energy density and consistent capacity delivery. Released in 2024 and with the manufacturer based in Japan, this cylindrical 21700 cell delivers 5.02 Ah capacity and 18.1 Wh of energy at a nominal voltage of 3.6 V, with a maximum continuous discharge capability of 12 A, making it well suited to energy-focused applications requiring extended runtime. Its 258 Wh/kg gravimetric energy density is above the 21700 cylindrical median of 257 Wh/kg in the About:Energy battery library.
Key Features
Discharge rate: 12 A continuous (2.4 C)
Energy density: 258 Wh/kg
Power density: 617 W/kg
Applications: aviation, e-mobility, energy storage
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Panasonic
Model
NCR2170M
Type
Li-ion
Form factor
Cylindrical 21700
Country of origin
Japan
Release year
2024
Nominal voltage
3.6
Energy capacity [Wh]
18.07
Capacity [Ah]
5.02
Gravimetric energy density [Wh/kg]
258
Gravimetric power density [W/kg]
617
Max continuous discharge [A]
12
Volume [cm³]
24.8
Mass [g]
70
Positive electrode (cathode)
Negative electrode (anode)
Value
Applications & Use‑Cases
The Panasonic NCR2170M is well suited to the following applications due to its cylindrical 21700 form factor and high energy density 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.
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.
Energy Storage: Requires stable cycle life across deep discharge profiles, reliable calendar life under float conditions, and consistent capacity retention over extended deployment periods.
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 Panasonic NCR2170M across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access Panasonic NCR2170M constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not NCR2170M data.)
Constant Current Temperature
Access Panasonic NCR2170M thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not NCR2170M data.)
Pulse Power Behaviour
Access Panasonic NCR2170M pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not NCR2170M data.)
Dynamic Profile Response
Access Panasonic NCR2170M 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 NCR2170M 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 Panasonic NCR2170M with similar Cylindrical 21700 cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
Panasonic
Panasonic Energy is a Japanese manufacturer and one of the largest producers of cylindrical lithium-ion cells
Panasonic Energy is part of the Panasonic group, headquartered in Osaka, Japan, and is one of the world's largest manufacturers of cylindrical lithium-ion cells. Its NCR and UR series 18650 cells set long-standing benchmarks for energy density and reliability in laptops, power tools and electric bicycles, and its 2170 cells supply automotive customers from plants in Japan, Nevada and Kansas. The company favours high-nickel NCA cathodes and has pursued steady capacity gains within the established cylindrical formats rather than changes of architecture. Its catalogue runs from small 14500 and 18500 cells through 18650, 20700 and 21700. Panasonic's cells are among the most widely characterised in the industry.
Frequently Asked Questions
What is the capacity and voltage of the Panasonic NCR2170M?
The Panasonic NCR2170M has a nominal capacity of 5.02 Ah and a nominal voltage of 3.6 V, providing 18.1 Wh of energy per cell.
What is the maximum continuous discharge capability of the Panasonic NCR2170M?
The Panasonic NCR2170M supports continuous discharge rates up to 12 A, delivering a power density of 617 W/kg.
How much does the Panasonic NCR2170M weigh and what is its volume?
The cell has a mass of 70 g and a volume of 24.8 cm³.
In which industries is the Panasonic NCR2170M commonly used?
The Panasonic NCR2170M is used across aviation, e-mobility and energy storage, applications that demand high energy density and consistent performance over extended cycles.
How does the Panasonic NCR2170M compare with the BAK CG-50?
Comparing the Panasonic NCR2170M with the BAK CG-50: capacity 5.02 Ah against 4.9 Ah; maximum continuous discharge 12 A against 14.7 A; energy density 258 Wh/kg against 257 Wh/kg; mass 70 g against 70 g. Both datasheets can be compared side by side in The Voltt.
What chemistry and format is the Panasonic NCR2170M?
The Panasonic NCR2170M is a cylindrical 21700 cell. It has a nominal voltage of 3.6 V and a volume of 24.8 cm³. Its full datasheet is free to view in The Voltt.
