Cylindrical 18650 High-Power Cell
Tenpower 26ME
Cylindrical 18650 cell delivering 2.6 Ah capacity with 214 Wh/kg energy density and 15 A maximum discharge rate.
Overview
The Tenpower 26ME is a high-power lithium-ion cylindrical 18650 cell designed for applications that demand sustained high power delivery. Released in 2022 and with the manufacturer based in China, this cylindrical 18650 cell delivers 2.6 Ah capacity and 9.62 Wh of energy at a nominal voltage of 3.7 V, with a maximum continuous discharge capability of 15 A, making it well suited to high-power systems requiring sustained current delivery. Its 15 A maximum continuous discharge is above the 18650 cylindrical median of 12.2 A in the About:Energy battery library.
Key Features
High discharge rate: 15 A continuous (5.8 C)
Energy density: 214 Wh/kg
Power density: 1,233 W/kg
Applications: aviation, motorsports, e-mobility
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Tenpower
Model
INR18650-26ME
Type
Li-ion
Form factor
Cylindrical 18650
Country of origin
China
Release year
2022
Nominal voltage
3.7
Energy capacity [Wh]
9.62
Capacity [Ah]
2.6
Gravimetric energy density [Wh/kg]
214
Gravimetric power density [W/kg]
1233
Max continuous discharge [A]
15
Volume [cm³]
17.69
Mass [g]
45
Positive electrode (cathode)
Ni-based
Negative electrode (anode)
Graphite
Value
Applications & Use‑Cases
The Tenpower 26ME is well suited to the following applications due to its cylindrical 18650 form factor and high power 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.
Motorsports: Demands sustained high discharge under competitive load profiles, rapid transient response for acceleration, and thermal stability to maintain performance during race conditions.
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.
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 Tenpower 26ME across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access Tenpower 26ME constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not 26ME data.)
Constant Current Temperature
Access Tenpower 26ME thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not 26ME data.)
Pulse Power Behaviour
Access Tenpower 26ME pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not 26ME data.)
Dynamic Profile Response
Access Tenpower 26ME 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 26ME 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 Tenpower 26ME with similar Cylindrical 18650 cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
Tenpower
Tenpower is a Chinese cylindrical lithium-ion cell manufacturer
Jiangsu Tenpower Lithium was founded in 2006 and is based in Zhangjiagang, China, where it develops and manufactures cylindrical lithium-ion cells in the 18650 and 21700 formats. Its catalogue covers both lithium iron phosphate and nickel-based chemistries, tuned for high power delivery, thermal stability and fast charging. The company supplies power tools, electric two-wheelers and light mobility, vacuum cleaners and energy storage customers across more than forty countries, having shipped cells in the billions since founding. It is a subsidiary of a listed Chinese industrial group, which underwrites its manufacturing capacity. Tenpower is an established high-volume supplier in the cylindrical power-cell segment rather than a recent entrant.
Frequently Asked Questions
What is the capacity and voltage of the Tenpower 26ME?
The Tenpower 26ME has a nominal capacity of 2.6 Ah and a nominal voltage of 3.7 V, providing 9.62 Wh of energy per cell.
What is the maximum continuous discharge capability of the Tenpower 26ME?
The Tenpower 26ME supports continuous discharge rates up to 15 A, delivering a power density of 1,233 W/kg.
How much does the Tenpower 26ME weigh and what is its volume?
The cell has a mass of 45 g and a volume of 17.7 cm³.
In which industries is the Tenpower 26ME commonly used?
The Tenpower 26ME is used across aviation, motorsports, e-mobility, applications that demand high power delivery and reliable performance across demanding duty cycles.
How does the Tenpower 26ME compare with the FEB 26EC?
Comparing the Tenpower 26ME with the FEB 26EC: capacity 2.6 Ah against 2.6 Ah; maximum continuous discharge 15 A against 13 A; energy density 214 Wh/kg against 195 Wh/kg; mass 45 g against 48 g. Both datasheets can be compared side by side in The Voltt.
What chemistry and format is the Tenpower 26ME?
The Tenpower 26ME is a cylindrical 18650 cell with a Ni-based cathode and a Graphite anode. It has a nominal voltage of 3.7 V and a volume of 17.7 cm³. Its full datasheet is free to view in The Voltt.
