Cylindrical 18650 Cell
Amprius SA10
Cylindrical 18650 cell delivering 4 Ah capacity with 288 Wh/kg energy density and 8 A maximum discharge rate.
Overview
The Amprius SA10 is a lithium-ion Li-ion cylindrical 18650 cell designed for applications that demand reliable performance. Released in 2024 and with the manufacturer based in United States, this cylindrical 18650 cell delivers 4 Ah capacity and 14.4 Wh of energy at a nominal voltage of 3.6 V, with a maximum continuous discharge capability of 8 A, making it suitable for general-purpose applications with moderate power requirements.
Key Features
Discharge rate: 8 A continuous (2.0 C)
Charging rate: 1.0 C charging rate
Energy density: 288 Wh/kg
Power density: 576 W/kg
Applications: e-mobility, space, power tools
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Amprius
Model
SA10
Type
Li-ion
Form factor
Cylindrical 18650
Country of origin
United States
Release year
2024
Nominal voltage
3.6
Energy capacity [Wh]
14.4
Capacity [Ah]
4
Gravimetric energy density [Wh/kg]
288
Gravimetric power density [W/kg]
576
Max continuous discharge [A]
8
Volume [cm³]
17.53
Mass [g]
50
Positive electrode (cathode)
Ni-based
Negative electrode (anode)
Graphite/Si additive
Value
Applications & Use‑Cases
The Amprius SA10 is well suited to the following applications due to its cylindrical 18650 and balanced performance.
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.
Space: Requires exceptional gravimetric energy density for mass-constrained systems, stable performance across extreme temperature ranges, and proven reliability for mission-critical operations.
Power Tools: Needs sustained high discharge for continuous operation under load, low voltage polarisation to maintain tool performance, and mechanical robustness for demanding work environments.
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 Amprius SA10 across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
The Amprius SA10 constant-current plots reveal voltage behaviour under steady loads, ideal for analysing efficiency.
Constant Current Temperature
The Amprius SA10 constant-current plots reveal temperature behaviour under steady loads, ideal for analysing thermal response.
Pulse Power Behaviour
The Amprius SA10 pulse power map evaluates short-duration load responses, allowing engineers to determine the maximum available power as a function of state of charge and temperature.
Dynamic Profile Response
The Amprius SA10 mission-profile plots simulate real-world duty cycles, showing how the cell manages dynamic power demands and temperature changes.
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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 Amprius SA10 with similar Cylindrical 18650 cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
Amprius
Amprius Technologies is an American silicon anode battery manufacturer
Amprius Technologies is pioneering next-generation lithium-ion batteries using proprietary silicon nanowire anode technology. Their advanced 21700 cells achieve industry-leading gravimetric energy densities, enabling extended range for electric vehicles and aerospace applications. Amprius batteries deliver up to 500 Wh/kg at the cell level, significantly outperforming conventional graphite-based cells. Based in Fremont, California, Amprius serves demanding markets including aviation, defense, and premium EVs where weight savings translate directly to performance gains. Their silicon anode platform represents a breakthrough in battery energy density, addressing critical range anxiety challenges while maintaining safety and cycle life standards required for commercial deployment.
Frequently Asked Questions
What is the capacity and voltage of the Amprius SA10?
The Amprius SA10 has a nominal capacity of 4.0 Ah and a nominal voltage of 3.6 V, providing 14.4 Wh of energy per cell.
What is the maximum continuous discharge capability of the Amprius SA10?
The Amprius SA10 supports continuous discharge rates up to 8 A, delivering exceptional power density of 576 W/kg.
How much does the Amprius SA10 weigh and what is its volume?
The cell has a mass of 50 g and a volume of 17.53 cm³.
In which industries is the Amprius SA10 commonly used?
The Amprius SA10 is used across e-mobility, energy storage, and consumer electronics, applications that demand reliable performance and balanced specifications.
What is The Voltt and how does it accelerate cell evaluation?
The Voltt is About Energy's digital cell simulation platform that models electrochemical and thermal performance, reducing evaluation time by up to 70% compared to laboratory testing.
What data can be extracted using The Voltt?
Engineers can simulate and visualise voltage, temperature, and power responses under constant-current or mission-profile conditions, generating detailed discharge plots to support accurate cell comparison and validation.
