Pouch High-Energy Cell
Welion SHP270-22-ESS
High-energy pouch cell delivering 22 Ah capacity with 251 Wh/kg energy density and 22 A maximum discharge rate.
Overview
The Welion SHP270-22-ESS is a lithium-ion pouch cell designed for applications that demand high energy density and consistent capacity delivery. Released in 2023 and with the manufacturer based in China, this pouch cell delivers 22 Ah capacity and 79.2 Wh of energy at a nominal voltage of 3.6 V, with a maximum continuous discharge capability of 22 A, making it well suited to energy-focused applications requiring extended runtime.
Key Features
Discharge rate: 22 A continuous (1.0 C)
Energy density: 251 Wh/kg
Power density: 251 W/kg
Cathode: Ni-based
Applications: aviation, e-mobility, energy storage
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Welion
Model
SHP270-22-ESS
Type
Li-ion
Form factor
Pouch
Country of origin
China
Release year
2023
Nominal voltage
3.6
Energy capacity [Wh]
79.2
Capacity [Ah]
22
Gravimetric energy density [Wh/kg]
251
Gravimetric power density [W/kg]
251
Max continuous discharge [A]
22
Volume [cm³]
144.02
Mass [g]
315
Positive electrode (cathode)
Ni-based
Negative electrode (anode)
Value
Applications & Use‑Cases
The Welion SHP270-22-ESS is well suited to the following applications due to its pouch 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 Welion SHP270-22-ESS across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access Welion SHP270-22-ESS constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not SHP270-22-ESS data.)
Constant Current Temperature
Access Welion SHP270-22-ESS thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not SHP270-22-ESS data.)
Pulse Power Behaviour
Access Welion SHP270-22-ESS pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not SHP270-22-ESS data.)
Dynamic Profile Response
Access Welion SHP270-22-ESS 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 SHP270-22-ESS 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 Welion SHP270-22-ESS with similar Pouch cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
Welion
WeLion is a Chinese developer of semi-solid-state lithium-ion cells
Beijing WeLion New Energy Technology was founded in 2016 as a spin-out from the Institute of Physics at the Chinese Academy of Sciences, and develops lithium-ion cells using hybrid solid-liquid electrolytes. The company supplies semi-solid-state cells for high-capacity passenger vehicle packs and produces high-power pouch cells for drones, eVTOL aircraft and other uncrewed platforms. Its SHP model codes denote high-power variants, with the trailing figure indicating rated capacity, while ESS-suffixed cells target stationary storage. WeLion operates production in Beijing and Zhejiang and is scaling toward all-solid-state chemistry. Its relevance lies in being one of the few manufacturers shipping semi-solid-state cells in commercial volumes.
Frequently Asked Questions
What is the capacity and voltage of the Welion SHP270-22-ESS?
The Welion SHP270-22-ESS has a nominal capacity of 22.0 Ah and a nominal voltage of 3.6 V, providing 79.2 Wh of energy per cell.
What is the maximum continuous discharge capability of the Welion SHP270-22-ESS?
The Welion SHP270-22-ESS supports continuous discharge rates up to 22 A, delivering a power density of 251 W/kg.
How much does the Welion SHP270-22-ESS weigh and what is its volume?
The cell has a mass of 315 g and a volume of 144.02 cm³.
In which industries is the Welion SHP270-22-ESS commonly used?
The Welion SHP270-22-ESS is used across aviation, e-mobility and energy storage, applications that demand high energy density and consistent performance over extended cycles.
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.
