Cylindrical 18650 High-Power Cell
Tenpower 29HE
Cylindrical 18650 cell delivering 2.9 Ah capacity with 232 Wh/kg energy density and 10 A maximum discharge rate.
Overview
The Tenpower 29HE is a lithium-ion cylindrical 18650 cell designed for applications that demand reliable performance and competitive energy storage. Released in 2022 and with the manufacturer based in China, this cylindrical 18650 cell delivers 2.9 Ah capacity and 10.4 Wh of energy at a nominal voltage of 3.6 V, with a maximum continuous discharge capability of 10 A, making it well suited to energy-focused applications requiring extended runtime. Its 232 Wh/kg gravimetric energy density is above the 18650 cylindrical median of 216 Wh/kg in the About:Energy battery library.
Key Features
High discharge rate: 10 A continuous (3.4 C)
Energy density: 232 Wh/kg
Power density: 800 W/kg
Applications: aviation, motorsports, e-mobility
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Tenpower
Model
INR18650-29HE
Type
Li-ion
Form factor
Cylindrical 18650
Country of origin
China
Release year
2022
Nominal voltage
3.6
Energy capacity [Wh]
10.44
Capacity [Ah]
2.9
Gravimetric energy density [Wh/kg]
232
Gravimetric power density [W/kg]
800
Max continuous discharge [A]
10
Volume [cm³]
17.69
Mass [g]
45
Positive electrode (cathode)
Ni-based
Negative electrode (anode)
Graphite
Value
Applications & Use‑Cases
The Tenpower 29HE 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 29HE across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access Tenpower 29HE constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not 29HE data.)
Constant Current Temperature
Access Tenpower 29HE thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not 29HE data.)
Pulse Power Behaviour
Access Tenpower 29HE pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not 29HE data.)
Dynamic Profile Response
Access Tenpower 29HE 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 29HE 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 29HE 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 29HE?
The Tenpower 29HE has a nominal capacity of 2.9 Ah and a nominal voltage of 3.6 V, providing 10.4 Wh of energy per cell.
What is the maximum continuous discharge capability of the Tenpower 29HE?
The Tenpower 29HE supports continuous discharge rates up to 10 A, delivering a power density of 800 W/kg.
How much does the Tenpower 29HE 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 29HE commonly used?
The Tenpower 29HE is used across aviation, motorsports, e-mobility, applications that demand high power delivery and reliable performance across demanding duty cycles.
How does the Tenpower 29HE compare with the Molicel P30B?
Comparing the Tenpower 29HE with the Molicel P30B: capacity 2.9 Ah against 3 Ah; maximum continuous discharge 10 A against 30 A; energy density 232 Wh/kg against 230 Wh/kg; mass 45 g against 47 g. Both datasheets can be compared side by side in The Voltt.
What chemistry and format is the Tenpower 29HE?
The Tenpower 29HE is a cylindrical 18650 cell with a Ni-based cathode and a Graphite anode. It has a nominal voltage of 3.6 V and a volume of 17.7 cm³. Its full datasheet is free to view in The Voltt.
