Pouch High-Power Cell
Advantelec 3S340-40
Pouch cell delivering 40 Ah capacity, 341 Wh/kg energy density and 120 A maximum discharge rate.
Overview
The Advantelec 3S340-40 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 40 Ah capacity and 142 Wh of energy at a nominal voltage of 3.55 V, with a maximum continuous discharge capability of 120 A, making it well suited to high-power systems. The silicon-bearing anode contributes to its 341 Wh/kg energy density. Its 341 Wh/kg gravimetric energy density is above the pouch median of 341 Wh/kg in the About:Energy battery library.
Key Features
High discharge rate: 120 A continuous (3.0 C)
Energy density: 341 Wh/kg
Power density: 1,022 W/kg
Capacity: 40 Ah nominal capacity
Applications: drones, e-mobility, aviation
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Advantelec
Model
3S340-40
Type
Li-ion
Form factor
Pouch
Country of origin
France
Release year
2026
Nominal voltage
3.55
Energy capacity [Wh]
142
Capacity [Ah]
40
Gravimetric energy density [Wh/kg]
341
Gravimetric power density [W/kg]
1022
Max continuous discharge [A]
120
Volume [cm³]
188.72
Mass [g]
417
Positive electrode (cathode)
Ni-based
Negative electrode (anode)
Graphite/Si additive
Value
Applications & Use‑Cases
The Advantelec 3S340-40 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 3S340-40 across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access Advantelec 3S340-40 constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not 3S340-40 data.)
Constant Current Temperature
Access Advantelec 3S340-40 thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not 3S340-40 data.)
Pulse Power Behaviour
Access Advantelec 3S340-40 pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not 3S340-40 data.)
Dynamic Profile Response
Access Advantelec 3S340-40 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 3S340-40 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 Advantelec 3S340-40 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 pouch cell and battery system manufacturer
Advantelec was founded in 2011 and is headquartered in Vénissieux near Lyon, where it designs lithium-ion pouch cells, battery packs with integrated management systems and the supporting electronics. Its ADV-POWER range spans NMC and semi-solid-state pouch chemistries, with high-energy variants aimed at weight-limited platforms. 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. That step makes it one of a small number of European producers offering sovereign supply of high-energy pouch cells.
Frequently Asked Questions
What is the capacity and voltage of the Advantelec 3S340-40?
The Advantelec 3S340-40 has a nominal capacity of 40 Ah and a nominal voltage of 3.55 V, providing 142 Wh of energy per cell.
What is the maximum continuous discharge capability of the Advantelec 3S340-40?
The Advantelec 3S340-40 supports continuous discharge rates up to 120 A, delivering a power density of 1,022 W/kg.
How much does the Advantelec 3S340-40 weigh and what is its volume?
The cell has a mass of 417 g and a volume of 189 cm³.
In which industries is the Advantelec 3S340-40 commonly used?
The Advantelec 3S340-40 is used across drones, e-mobility, aviation, applications that demand sustained high current.
How does the Advantelec 3S340-40 compare with the Advantelec 3S300-35?
Comparing the Advantelec 3S340-40 with the Advantelec 3S300-35: capacity 40 Ah against 35 Ah; maximum continuous discharge 120 A against 105 A; energy density 341 Wh/kg against 301 Wh/kg; mass 417 g against 425 g. Both datasheets can be compared side by side in The Voltt.
What chemistry and format is the Advantelec 3S340-40?
The Advantelec 3S340-40 is a pouch cell with a Ni-based cathode and a Graphite/Si additive anode. It has a nominal voltage of 3.55 V and a volume of 189 cm³. Its full datasheet is free to view in The Voltt.
