Cylindrical 18650 High-Power Cell
LithiumWerks 18650M1B
High-power cylindrical 18650 cell delivering 1.1 Ah capacity with 92 Wh/kg energy density and 30 A maximum discharge rate.
Overview
The LithiumWerks APR18650M1B is a high-power Li-ion cylindrical 18650 cell designed for applications that demand sustained high current and high energy density. Released in 2019 and with the manufacturer based in Netherlands, this cylindrical 18650 cell delivers 1.1 Ah capacity and 3.63 Wh of energy at a nominal voltage of 3.3 V, with a maximum continuous discharge capability of 30 A, making it well suited to high-power systems operating under aggressive load profiles.
Key Features
Extremely high discharge rate: 30 A continuous (27.3 C)
Energy density: 92 Wh/kg
Power density: 2506 W/kg
Applications: e-mobility, space, power tools
Technical Specifications from the Manufacturer
Parameter
Manufacturer
LithiumWerks
Model
APR18650M1B
Type
Li-ion
Form factor
Cylindrical 18650
Country of origin
Netherlands
Release year
2019
Nominal voltage
3.3
Energy capacity [Wh]
3.63
Capacity [Ah]
1.2
Gravimetric energy density [Wh/kg]
92
Gravimetric power density [W/kg]
2506
Max continuous discharge [A]
30
Volume [cm³]
17.08
Mass [g]
39.5
Positive electrode (cathode)
LFP
Negative electrode (anode)
Graphite
Value
Applications & Use‑Cases
The LithiumWerks APR18650M1B is well suited to the following applications due to its cylindrical 18650 and high power 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 LithiumWerks APR18650M1B across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access LithiumWerks 18650M1B constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not 18650M1B data.)
Constant Current Temperature
Access LithiumWerks 18650M1B thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not 18650M1B data.)
Pulse Power Behaviour
Access LithiumWerks 18650M1B pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not 18650M1B data.)
Dynamic Profile Response
Access LithiumWerks 18650M1B 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 18650M1B 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 LithiumWerks 18650M1B with similar Cylindrical 18650 cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
LithiumWerks
LithiumWerks is an American lithium iron phosphate cell and module manufacturer
LithiumWerks was formed in 2017 and is headquartered in Austin, Texas, built around the Nanophosphate lithium iron phosphate technology and patent portfolio originating with A123 and Valence. It produces cylindrical 18650 and 26650 cells alongside larger prismatic modules and complete systems with integrated management electronics. The chemistry is selected for abuse tolerance, thermal stability and long cycle life rather than maximum energy density, which suits marine, industrial, transport and stationary storage duty. Production is carried out in China, with commercial and engineering operations in the United States and the Netherlands. Its position rests on a mature LFP platform with a long field record behind it.
Frequently Asked Questions
What is the capacity and voltage of the LithiumWerks 18650M1B?
The LithiumWerks 18650M1B has a nominal capacity of 1.1 Ah and a nominal voltage of 3.3 V, providing 3.6 Wh of energy per cell.
What is the maximum continuous discharge capability of the LithiumWerks 18650M1B?
The LithiumWerks 18650M1B supports continuous discharge rates up to 30 A, delivering exceptional power density of 2,506 W/kg.
How much does the LithiumWerks 18650M1B weigh and what is its volume?
The cell has a mass of 39.5 g and a volume of 17.08 cm³.
In which industries is the LithiumWerks 18650M1B commonly used?
The LithiumWerks 18650M1B is used across aviation, motorsports, drones, and power tools, applications that demand both high energy and power density.
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.
