Pouch High-Power Cell
Advantelec 3S340-20
Pouch cell delivering 20 Ah capacity, 333 Wh/kg energy density and 60 A maximum discharge rate.
Overview
The Advantelec 3S340-20 is a high-power Li-ion pouch cell designed for applications that demand sustained high current. Released in 2026 and with the manufacturer based in France, this pouch cell delivers 20 Ah capacity and 71 Wh of energy at a nominal voltage of 3.55 V, with a maximum continuous discharge capability of 60 A, making it well suited to high-power systems. A gravimetric energy density of 333 Wh/kg puts it at the upper end of the library. The silicon-bearing anode contributes to that energy density.
Key Features
High discharge rate: 60 A continuous (3.0 C)
Energy density: 333 Wh/kg
Power density: 1000 W/kg
Capacity: 20 Ah nominal capacity
Applications: drones, e-mobility, aviation
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Advantelec
Model
3S340-20
Type
Li-ion
Form factor
Pouch
Country of origin
France
Release year
2026
Nominal voltage
3.55
Energy capacity [Wh]
71
Capacity [Ah]
20
Gravimetric energy density [Wh/kg]
333
Gravimetric power density [W/kg]
1000
Max continuous discharge [A]
60
Volume [cm³]
99.2784
Mass [g]
213
Positive electrode (cathode)
Ni-based
Negative electrode (anode)
Graphite/Si additive
Value
Applications & Use‑Cases
The Advantelec 3S340-20 is well suited to the following applications due to its pouch format and high power performance.
Drones: Demands high gravimetric power density for thrust and payload capacity, rapid current response for flight control, and stable voltage delivery across dynamic flight profiles.
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.
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.
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 Advantelec 3S340-20 across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
The Advantelec 3S340-20 constant-current plots reveal voltage behaviour under steady loads, ideal for analysing efficiency.
Constant Current Temperature
The Advantelec 3S340-20 constant-current plots reveal temperature behaviour under steady loads, ideal for analysing thermal response.
Pulse Power Behaviour
The Advantelec 3S340-20 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 Advantelec 3S340-20 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 Advantelec 3S340-20 with similar Pouch cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
Advantelec
Advantelec is a French lithium-ion cell and battery system manufacturer
Advantelec is a French battery manufacturer founded in 2011 and headquartered in Vénissieux, near Lyon, designing lithium-ion pouch cells, battery packs with integrated management systems, and supporting electronics for professional applications. Its ADV-POWER® range spans NMC and semi-solid-state pouch chemistries, with high-energy variants reaching gravimetric energy densities of 340–350 Wh/kg. The company supplies rugged battery systems for uncrewed aerial vehicles, medical instrumentation and industrial equipment, where certification and traceability matter as much as raw performance. In 2024 Advantelec commissioned a pilot cell production line near Lyon, moving from pack integration into domestic cell manufacture and reducing its dependence on external cell suppliers. That vertical step positions the company as one of a small number of European producers offering sovereign supply of high-energy pouch cells for defence-adjacent and professional UAV programmes.
Frequently Asked Questions
What is the capacity and voltage of the Advantelec 3S340-20?
The Advantelec 3S340-20 has a nominal capacity of 20 Ah and a nominal voltage of 3.55 V, providing 71 Wh of energy per cell.
What is the maximum continuous discharge capability of the Advantelec 3S340-20?
The Advantelec 3S340-20 supports continuous discharge rates up to 60 A, delivering a power density of 1000 W/kg.
How much does the Advantelec 3S340-20 weigh and what is its volume?
The cell has a mass of 213 g and a volume of 99.28 cm³.
In which industries is the Advantelec 3S340-20 commonly used?
The Advantelec 3S340-20 is used across drones, e-mobility, aviation, applications that demand sustained high current.
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.
