Cylindrical 18650 Cell
Tenpower 35HE
Cylindrical 18650 cell delivering 3.5 Ah capacity with 263 Wh/kg energy density and 10 A maximum discharge rate.
Overview
The Tenpower 35HE is a high-energy lithium-ion cylindrical 18650 cell designed for applications that demand high energy density and extended runtime. Released in 2022 and with the manufacturer based in China, this cylindrical 18650 cell delivers 3.5 Ah capacity and 12.6 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. At 263 Wh/kg, the 35HE ranks among the highest gravimetric energy densities in the 18650 format within the Voltt library, and its silicon-additive graphite anode contributes to the elevated gravimetric energy density relative to peers at this discharge level.
Key Features
Discharge rate: 10 A continuous (2.9 C)
Energy density: 263 Wh/kg
Power density: 750 W/kg
Applications: aviation, e-mobility, energy storage
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Tenpower
Model
INR18650-35HE
Type
Li-ion
Form factor
Cylindrical 18650
Country of origin
China
Release year
2022
Nominal voltage
3.6
Energy capacity [Wh]
12.6
Capacity [Ah]
3.5
Gravimetric energy density [Wh/kg]
263
Gravimetric power density [W/kg]
750
Max continuous discharge [A]
10
Volume [cm³]
17.74
Mass [g]
48
Positive electrode (cathode)
Ni-based
Negative electrode (anode)
Graphite/Si additive
Value
Applications & Use‑Cases
The Tenpower 35HE is well suited to the following applications due to its cylindrical 18650 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.
.jpg)
Performance & Model Data
Below are modelled performance metrics for the Tenpower 35HE across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access Tenpower 35HE constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not 35HE data.)
Constant Current Temperature
Access Tenpower 35HE thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not 35HE data.)
Pulse Power Behaviour
Access Tenpower 35HE pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not 35HE data.)
Dynamic Profile Response
Access Tenpower 35HE 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 35HE data.)
.png)
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 35HE 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 35HE?
The Tenpower 35HE has a nominal capacity of 3.5 Ah and a nominal voltage of 3.6 V, providing 12.6 Wh of energy per cell.
What is the maximum continuous discharge capability of the Tenpower 35HE?
The Tenpower 35HE supports continuous discharge rates up to 10 A, delivering a power density of 750 W/kg.
How much does the Tenpower 35HE weigh and what is its volume?
The cell has a mass of 48 g and a volume of 17.7 cm³.
In which industries is the Tenpower 35HE commonly used?
The Tenpower 35HE is used across aviation, e-mobility, energy storage, applications that demand high energy density and consistent performance over extended cycles.
How does the Tenpower 35HE compare with the EVE Energy 35V?
Comparing the Tenpower 35HE with the EVE Energy 35V: capacity 3.5 Ah against 3.5 Ah; maximum continuous discharge 10 A against 10.2 A; energy density 263 Wh/kg against 256 Wh/kg; mass 48 g against 50 g. Both datasheets can be compared side by side in The Voltt.
What chemistry and format is the Tenpower 35HE?
The Tenpower 35HE is a cylindrical 18650 cell with a Ni-based cathode and a Graphite/Si additive 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.
