Cylindrical 21700 High-Power Cell
Tenpower 50XG
High-power cylindrical 21700 cell delivering 5 Ah capacity with 257 Wh/kg energy density and 90 A maximum discharge rate.
Overview
The Tenpower INR21700-50XG is a high-power Li-ion cylindrical 21700 cell designed for applications that demand sustained high current and high energy density. Manufactured in Malaysia, this cylindrical 21700 cell delivers 5 Ah capacity and 18 Wh of energy at a nominal voltage of 3.6 V, with a maximum continuous discharge capability of 90 A, making it well suited to high-power systems such as aviation, motorsports, and drones. The 50XG stands out within the 5 Ah class by pairing the energy capacity of a standard 5 Ah cell with the 18C discharge rate more commonly found in sub-4 Ah power cells, and its silicon-additive graphite anode contributes to the cell's elevated gravimetric energy density relative to peers at this discharge level.
Key Features
Extremely high discharge rate: 90 A continuous (18.0 C)
Charging rate: 2.0 C charging rate
Energy density: 257 Wh/kg
Power density: 4,629 W/kg
Applications: Aviation, motorsports, drones
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Tenpower
Model
INR21700-50XG
Type
Li-ion
Form factor
Cylindrical 21700
Country of origin
Malaysia
Release year
2025
Nominal voltage
3.6
Energy capacity [Wh]
18
Capacity [Ah]
5
Gravimetric energy density [Wh/kg]
257
Gravimetric power density [W/kg]
4629
Max continuous discharge [A]
90
Volume [cm³]
25.36
Mass [g]
70
Positive electrode (cathode)
Ni-based
Negative electrode (anode)
Graphite/Si additive
Value
Applications & Use‑Cases
The Tenpower 50XG is well suited to the following applications due to its cylindrical 21700 format 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.
Drones: Requires high power-to-weight ratio for lift and manoeuvrability, stable discharge under variable loads, and compact cylindrical packaging for efficient pack integration.
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 50XG across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
The Tenpower 50XG constant-current plots reveal voltage behaviour under steady loads, ideal for analysing efficiency.
Constant Current Temperature
The Tenpower 50XG constant-current plots reveal temperature behaviour under steady loads, ideal for analysing thermal response.
Pulse Power Behaviour
The Tenpower 50XG pulse power map evaluates short-duration load responses, allowing engineers to determine the maximum available power as a function of state of charge and temperature.
Dynamic Profile Response
The Tenpower 50XG mission-profile plots simulate real-world duty cycles, showing how the cell manages dynamic power demands and temperature changes.
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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 50XG with similar Cylindrical 21700 cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
Tenpower
Tenpower is a Chinese lithium-ion battery manufacturer
Tenpower is an emerging Chinese battery manufacturer specializing in high-performance lithium-ion cylindrical cells for electric vehicles and energy storage applications. Their 21700 format cells emphasize cost-effective energy density and reliable cycle life for mass-market EV adoption. Tenpower's manufacturing approach focuses on process optimization and quality control to deliver competitive battery solutions for China's rapidly expanding electric vehicle market. With investments in automated production lines and material science research, Tenpower aims to capture growing demand from domestic automotive manufacturers and international battery pack integrators. Their cylindrical cell technology balances performance characteristics with manufacturing scalability, positioning them as a value-oriented supplier in the global battery supply chain.
Frequently Asked Questions
What is the capacity and voltage of the Tenpower 50XG?
The Tenpower 50XG has a nominal capacity of 5.0 Ah and a nominal voltage of 3.6 V, providing 18.0 Wh of energy per cell.
What is the maximum continuous discharge capability of the Tenpower 50XG?
The Tenpower 50XG supports continuous discharge rates up to 90 A, delivering exceptional power density of 4,629 W/kg.
How much does the Tenpower 50XG weigh and what is its volume?
The cell has a mass of 70 g and a volume of 25.36 cm³.
In which industries is the Tenpower 50XG commonly used?
The Tenpower 50XG is used across aviation, motorsports, and drones, applications that demand both high energy density and extreme discharge capability at the 5 Ah capacity level.
What is The Voltt and how does it accelerate cell evaluation?
The Voltt is About Energy's digital cell simulation platform that models electrochemical and thermal performance, reducing evaluation time by up to 70% compared to laboratory testing.
What data can be extracted using The Voltt?
Engineers can simulate and visualise voltage, temperature, and power responses under constant-current or mission-profile conditions, generating detailed discharge plots to support accurate cell comparison and validation.
