Cylindrical 4680 Cell
BYD FC4680
Cylindrical 4680 cell delivering 15 Ah capacity with 143 Wh/kg energy density and 15.3 A maximum discharge rate.
Overview
The BYD FC4680 is a lithium-ion Li-ion cylindrical 4680 cell designed for applications that demand reliable performance. Released in 2023 and manufactured in China, this cylindrical 4680 cell delivers 15 Ah capacity and 48 Wh of energy at a nominal voltage of 3.2 V, with a maximum continuous discharge capability of 15.3 A, making it suitable for general-purpose applications with moderate power requirements.
Key Features
Discharge rate: 15.3 A continuous (1.0 C)
Energy density: 143 Wh/kg
Power density: 146 W/kg
High capacity: 15 Ah nominal capacity
Applications: automotive, e-mobility, energy storage
Technical Specifications from the Manufacturer
Parameter
Manufacturer
BYD
Model
FC4680
Type
Li-ion
Form factor
Cylindrical 4680
Country of origin
China
Release year
2023
Nominal voltage
3.2
Energy capacity [Wh]
48
Capacity [Ah]
15
Gravimetric energy density [Wh/kg]
143
Gravimetric power density [W/kg]
146
Max continuous discharge [A]
15.3
Volume [cm³]
137
Mass [g]
335
Positive electrode (cathode)
LFP
Negative electrode (anode)
Graphite
Value
Applications & Use‑Cases
The BYD FC4680 is well suited to the following applications due to its cylindrical 4680 and balanced performance.
Automotive: Demands high energy density for extended range, fast-charge capability for reduced downtime, and proven safety and reliability for passenger vehicle applications.
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 long cycle life for daily charge-discharge operation, stable capacity retention over years of service, and safe operation in grid-connected or islanded applications.
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 BYD FC4680 across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access BYD FC4680 constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not FC4680 data.)
Constant Current Temperature
Access BYD FC4680 thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not FC4680 data.)
Pulse Power Behaviour
Access BYD FC4680 pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not FC4680 data.)
Dynamic Profile Response
Access BYD FC4680 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 FC4680 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 BYD FC4680 with other cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
BYD
BYD is a Chinese electric vehicle and battery manufacturer
BYD was founded in 1995 and is headquartered in Shenzhen, and is one of the world's largest producers of electric vehicles and the batteries that power them. The company is vertically integrated across the battery supply chain, from cathode and anode materials to finished cells, modules and vehicles. Its Blade prismatic lithium iron phosphate cell is built for pack-level integration and thermal stability, and the portfolio also covers high-nickel and cylindrical formats. BYD supplies passenger cars, commercial fleets, buses and grid-scale storage, with manufacturing across China, Europe and the Americas. Its position rests on combining automotive engineering and cell manufacture inside a single organisation.
Frequently Asked Questions
What is the capacity and voltage of the BYD FC4680?
The BYD FC4680 has a nominal capacity of 15.0 Ah and a nominal voltage of 3.2 V, providing 48 Wh of energy per cell.
What is the maximum continuous discharge capability of the BYD FC4680?
The BYD FC4680 supports continuous discharge rates up to 15.3 A, delivering exceptional power density of 146 W/kg.
How much does the BYD FC4680 weigh and what is its volume?
The cell has a mass of 335 g and a volume of 137.00 cm³.
In which industries is the BYD FC4680 commonly used?
The BYD FC4680 is used across e-mobility, energy storage, and general-purpose applications, applications that demand reliable performance and balanced specifications.
What is The Voltt and how does it accelerate cell evaluation?
The Voltt holds 500+ verified commercial cell datasheets alongside validated simulation models built from cells characterised in About:Energy's own lab. Engineers screen candidates against their real duty cycle before buying hardware, which cut cell evaluation time by seven months for McMurtry Automotive and reduces evaluation cycles by up to 70%.
What data can be extracted using The Voltt?
Constant-current discharge curves at multiple C-rates, DC internal resistance against state of charge and temperature, pulse power maps, thermal response, and full mission-profile simulation with user-defined pack configurations. Models are available as equivalent circuit, thermal, physics-based and degradation formats, exportable for use in MATLAB, Simulink and Python workflows.
