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TENPOWER INR21700-40TG

Get everything you need for the lithium-ion battery cell TENPOWER INR21700-40TG: Extensive measurement data in the total operation regime, a high-precision, physical battery model with global validity, and a teardown report that contains all details about materials and microstructures.

Cell Origin purchased on free market
Cell Format 21700
Dimen­sions 21.1 x 69.9 mm
Weight 66.4 g
Capacity
defin­i­tion
nominal 4.00 Ah
C/10 4.03 Ah
Current
defin­i­tion
contin­uous 19.4 A
peak 31.9 A
Energy
defin­i­tion
C/10 14.6 Wh
Power
defin­i­tion
contin­uous 66.2 W
peak 109 W
Energy Density
defin­i­tion
gravi­metric 220 Wh/kg
volumetric 597 Wh/l
Power Density
defin­i­tion
gravi­metric 1.63 kW/kg
volumetric 4.43 kW/l

TENPOWER INR21700-40TG Model

The Batemo Cell Model of the lithium-ion battery cell TENPOWER INR21700-40TG is a high-preci­sion, physical cell model with global validity. As a digital twin it seamlessly integrates into your research, development and battery analytics by basing your decisions on simula­tions. See the details to learn more about the features and capabil­i­ties of the Batemo Cell Model.

Batemo Cell Model Version 1.311
Release Date September 30, 2023

Batemo demon­strates the accuracy and validity of the Batemo Cell Model by comparing battery simula­tion and measure­ment data in the range given below. Valida­tion is exten­sive, exper­i­mental charac­ter­i­za­tion covers the total opera­tional area of the cell: At low and high temper­a­tures, up to the maximal current and in the whole state of charge range.

State of Charge Range 0 … 100%
Current Range
defin­i­tion
-120 A discharge … 16 A charge (-30.0C … 4.0C)
Voltage Range
defin­i­tion
2.5 … 4.2 V
Temper­a­ture Range
defin­i­tion
-20 … 80 °C

Moreover, the valida­tion of the Batemo Cell Model is fully trans­parent. The Batemo Cell Data contains the raw measure­ment and simula­tion data. For all exper­i­ments the voltage, temper­a­ture, power and energy accura­cies are calcu­lated. This allows straight-forward evalu­a­tion and analysis of the Batemo Cell Model validity. The graphs show a selec­tion of charac­ter­istic data of the cell TENPOWER INR21700-40TG to evaluate the cell performance.

Discharge Charac­ter­is­tics

TENPOWER_INR2170040TG_const

  • Discharge Charac­ter­is­tics: The electrical and thermal discharge behavior is strongly nonlinear.
  • Pulse Charac­ter­is­tics: The shape of different current pulses changes strongly.
  • Energy Charac­ter­is­tics: The graph visual­izes how much energy the cell can deliver when operated at different powers.
  • Power Charac­ter­is­tics: The more power the cell supplies, the shorter it can deliver the power.
  • Thermal Charac­ter­is­tics: The greater the thermal losses, the more the cell heats up, resulting in higher depleted power.

Pulse Charac­ter­is­tics

TENPOWER_INR2170040TG_pulse

show exper­i­ment defin­i­tions

Energy Charac­ter­is­tics

How much energy can it deliver?

TENPOWER_INR2170040TG_energy

Power Charac­ter­is­tics

How long can it deliver the power?

TENPOWER_INR2170040TG_power

Thermal Charac­ter­is­tics

How hot does it get?

TENPOWER_INR2170040TG_thermal

The mean accura­cies give an overview of the Batemo Cell Model accuracy. There­fore, the root mean square of the differ­ence between the measure­ment and simula­tion result is derived for the voltage, the temper­a­ture, the energy and the power. Relative numbers relate the accuracy to the respec­tive absolute value.

Mean Voltage Accuracy 0.020 V 0.6 %
Mean Temper­a­ture Accuracy 0.7 K 0.7 %
Mean Power Accuracy 0.70 W 0.8 %
Mean Energy Accuracy 0.100 Wh 1.3 %

The Batemo Cell Model precisely describes all aspects of the cell. It is the perfect tool for battery system development.

TENPOWER INR21700-40TG Data

Batemo offers an exten­sive, exper­i­mental charac­ter­i­za­tion of the lithium-ion battery cell TENPOWER INR21700-40TG. The data contains measure­ment results in the total opera­tional area of the cell. The descrip­tions and graphs below explain and show the avail­able measure­ments. The Batemo Cell Viewer allows easy and fast analysis, evalu­a­tion and compar­ison of the data. See the details to learn more.

Constant Currents

TENPOWER_INR2170040TG_validation_const

The cell is discharged from 100% SOC or charged from 0% SOC with different constant currents at different ambient temper­a­tures. The thermal boundary condi­tion is free convec­tion. The measure­ment stops when reaching either the voltage of 2.5V or 4.2V or the surface temper­a­ture of 80°C. The graph shows for which ambient temper­a­tures and charging and discharging constant currents measure­ments are available.

Pulse Currents

TENPOWER_INR2170040TG_validation_pulse

The cell is discharged from 100% SOC or charged from 0% SOC with current pulses followed by no-load phases at different ambient temper­a­tures. The thermal boundary condi­tion is free convec­tion. The measure­ment stops when reaching either the voltage of 2.5V or 4.2V or the surface temper­a­ture of 80°C. The graph shows for which ambient temper­a­tures and pulse currents measure­ments are available.

Power Profiles

Ambient
Temper­a­ture
Avail­able
Profiles
-20 °C profile_check
0 °C profile_check
25 °C profile_check
40 °C profile_check

The cell delivers a typical power profile from 100% SOC at different ambient temper­a­tures. The thermal boundary condi­tion is free convec­tion. The measure­ment stops when reaching either the voltage of 2.5V or the surface temper­a­ture of 80°C. The table summa­rizes for which ambient temper­a­tures the profile is available.

TENPOWER INR21700-40TG Report

Batemo offers a detailed report of the lithium-ion battery cell TENPOWER INR21700-40TG. The report covers all impor­tant aspects about the cell. This infor­ma­tion greatly helps you to further evaluate and compare the cell. It is a profound basis for your decisions concerning your battery system design. See the details to learn more.

Perfor­mance Overview
Cell Exterior
Cell Interior
Safety Features
Electrode Microstruc­ture and Material