Batemo Cell Explorer
muRata US18650-VTC5A

The Batemo Cell of the lithium-ion battery cell muRata US18650-VTC5A is a high-precision, physical battery model with global validity. As a digital twin it seamlessly integrates into your research, development and battery analytics by basing your decisions on simulations.

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Cell Origin purchased on free market
Cell Format 18650
Dimen­sions 18.23 x 65 mm
Weight 47.8 g
Capacity
[defin­i­tion]
The nominal capacity origi­nates from the manufac­tur­er’s data sheet, if avail­able. When the data sheet is unavail­able, the nominal capacity is estimated. Batemo measured the C/10 capacity by discharging the cell at an ambient temper­a­ture of 25°C from 100% with a constant current of 0.26A (0.1C) until reaching the voltage of 2.0V. The thermal boundary condi­tion is free convection.
 nominal 2.60 Ah
C/10 2.45 Ah
Current
[defin­i­tion]
All quanti­ties are measure­ment results of the Batemo battery labora­tory. The contin­uous current is the highest current that completely discharges the cell without over-heating it. Therefor, the cell is discharged from 100% state of charge at an ambient temper­a­ture of 25°C with a constant current until reaching a residual state of charge of 10% and either the voltage of 2.0V or 90% of the maximum surface temper­a­ture of 72°C. The peak current is the current the cell can deliver for 5 minutes. Conse­quently, the cell is discharged from 100% SOC at an ambient temper­a­ture of 25°C with a constant current until reaching either the voltage of 2.0V or the surface temper­a­ture of 80°C after 5 minutes. The thermal boundary condi­tion is free convec­tion. These opera­tional condi­tions might be outside the speci­fi­ca­tion of the cell manufacturer.
 contin­uous 17.6 A
peak 24.2 A
Energy
[defin­i­tion]
Batemo measured the C/10 energy by discharging the cell at an ambient temper­a­ture of 25°C from 100% with a constant current of 0.26A (0.1C) until reaching the voltage of 2.0V. The thermal boundary condi­tion is free convection.
 C/10 8.96 Wh
Power
[defin­i­tion]
All quanti­ties are measure­ment results of the Batemo battery labora­tory. The mean contin­uous power is the highest power that completely discharges the cell without over-heating it. There­fore, the cell is discharged from 100% state of charge at an ambient temper­a­ture of 25°C with a constant current until reaching a residual state of charge of 10% and either the voltage of 2.0V or 90% of the maximum surface temper­a­ture of 72°C. The peak power is the power the cell can deliver for 5 minutes. Conse­quently, the cell is discharged from 100% SOC at an ambient temper­a­ture of 25°C with a constant current until reaching either the voltage of 2.0V or the surface temper­a­ture of 80°C after 5 minutes. The thermal boundary condi­tion is free convec­tion. These opera­tional condi­tions might be outside the speci­fi­ca­tion of the cell manufacturer.
 contin­uous 58.7 W
peak 80.2 W
Energy Density
[defin­i­tion]
The energy densi­ties result from the C/10 energy, the cell weight and the cell volume.
 gravi­metric 187 Wh/kg
volumetric 528 Wh/l
Power Density
[defin­i­tion]
The power densi­ties result from the peak power, the cell weight and the cell volume.
 gravi­metric 1.68 kW/kg
volumetric 4.73 kW/l

Batemo Cell

The Batemo Cell of the lithium-ion battery cell muRata US18650-VTC5A 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.

Batemo Cell Version 1.305
Release Date September 01, 2021

Batemo demon­strates the accuracy and validity of the Batemo cell 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]

The current range are the electrical current limits as used in the Batemo battery labora­tory. Please see the muRata US18650-VTC5A data sheet for the precise defin­i­tion of the current safe area of opera­tion of the cell.
 -78 A discharge … 10 A charge (-30.0C … 4.0C)
Voltage Range
[defin­i­tion]

The voltage range are the electrical voltage limits as used in the Batemo battery labora­tory. Please see the muRata US18650-VTC5A data sheet for the precise defin­i­tion of the voltage safe area of opera­tion of the cell.
 2.0 … 4.2 V
Temper­a­ture Range
[defin­i­tion]

The temper­a­ture range are the thermal limits as used in the Batemo battery labora­tory. Please see the muRata US18650-VTC5A data sheet for the precise defin­i­tion of the temper­a­ture safe area of opera­tion of the cell.
 -20 … 80 °C

Moreover, the Batemo Cell valida­tion 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 validity. The graphs show a selec­tion of charac­ter­istic data of the cell muRata US18650-VTC5A to evaluate the cell performance.

Discharge Charac­ter­is­tics

muRata_US18650VTC5A_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 thermal losses heat up the cell the more, the higher the depleted power is.

Pulse Charac­ter­is­tics

muRata_US18650VTC5A_pulse

[show exper­i­ment defin­i­tions]

Discharge Charac­ter­is­tics
The cell is discharged from 100% 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 2.0V or the surface temper­a­ture of 80°C.
Pulse Charac­ter­is­tics
The cell is discharged from 100% 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 2.0V or the surface temper­a­ture of 80°C. The graph shows a zoomed view of the measure­ment to visualize one of the pulses.
Energy Charac­ter­is­tics
The cell is discharged from 100% SOC with different constant currents at 25°C. The thermal boundary condi­tion is free convec­tion. The measure­ment stops when reaching either the voltage of 2.0V or the surface temper­a­ture of 80°C. The graph shows the derived exchanged energy and average power of the experiment.
Power Charac­ter­is­tics
The cell is discharged from 100% SOC with different constant currents at 25°C. The thermal boundary condi­tion is free convec­tion. The measure­ment stops when reaching either the voltage of 2.0V or the surface temper­a­ture of 80°C. The graph shows the derived exper­i­ment duration and average power of the experiment.
Thermal Charac­ter­is­tics
The cell is discharged from 100% SOC with different constant currents at 25°C. The thermal boundary condi­tion is free convec­tion. The measure­ment stops when reaching either the voltage of 2.0V or the surface temper­a­ture of 80°C. The graph shows the cell surface temper­a­ture at the end and the derived average power of the experiment.

Energy Charac­ter­is­tics

How much energy can it deliver?

muRata_US18650VTC5A_energy

Power Charac­ter­is­tics

How long can it deliver the power?

muRata_US18650VTC5A_power

Thermal Charac­ter­is­tics

How hot does it get?

muRata_US18650VTC5A_thermal

The mean accura­cies give an overview of the Batemo Cell 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 0.032 V 1.2 %
Mean Temper­a­ture Accuracy 0.7 K 0.7 %
Mean Power Accuracy 0.31 W 1.2 %
Mean Energy Accuracy 0.060 Wh 1.3 %

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

Batemo Cell Data

The Batemo Cell of the lithium-ion battery cell muRata US18650-VTC5A 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.

Batemo Cell Version 1.305
Release Date September 01, 2021

Batemo demon­strates the accuracy and validity of the Batemo cell 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]

The current range are the electrical current limits as used in the Batemo battery labora­tory. Please see the muRata US18650-VTC5A data sheet for the precise defin­i­tion of the current safe area of opera­tion of the cell.
 -78 A discharge … 10 A charge (-30.0C … 4.0C)
Voltage Range
[defin­i­tion]

The voltage range are the electrical voltage limits as used in the Batemo battery labora­tory. Please see the muRata US18650-VTC5A data sheet for the precise defin­i­tion of the voltage safe area of opera­tion of the cell.
 2.0 … 4.2 V
Temper­a­ture Range
[defin­i­tion]

The temper­a­ture range are the thermal limits as used in the Batemo battery labora­tory. Please see the muRata US18650-VTC5A data sheet for the precise defin­i­tion of the temper­a­ture safe area of opera­tion of the cell.
 -20 … 80 °C

Moreover, the Batemo Cell valida­tion 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 validity. The graphs show a selec­tion of charac­ter­istic data of the cell muRata US18650-VTC5A to evaluate the cell performance.

Discharge Charac­ter­is­tics

muRata_US18650VTC5A_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 thermal losses heat up the cell the more, the higher the depleted power is.

Pulse Charac­ter­is­tics

muRata_US18650VTC5A_pulse

[show exper­i­ment defin­i­tions]

Discharge Charac­ter­is­tics
The cell is discharged from 100% 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 2.0V or the surface temper­a­ture of 80°C.
Pulse Charac­ter­is­tics
The cell is discharged from 100% 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 2.0V or the surface temper­a­ture of 80°C. The graph shows a zoomed view of the measure­ment to visualize one of the pulses.
Energy Charac­ter­is­tics
The cell is discharged from 100% SOC with different constant currents at 25°C. The thermal boundary condi­tion is free convec­tion. The measure­ment stops when reaching either the voltage of 2.0V or the surface temper­a­ture of 80°C. The graph shows the derived exchanged energy and average power of the experiment.
Power Charac­ter­is­tics
The cell is discharged from 100% SOC with different constant currents at 25°C. The thermal boundary condi­tion is free convec­tion. The measure­ment stops when reaching either the voltage of 2.0V or the surface temper­a­ture of 80°C. The graph shows the derived exper­i­ment duration and average power of the experiment.
Thermal Charac­ter­is­tics
The cell is discharged from 100% SOC with different constant currents at 25°C. The thermal boundary condi­tion is free convec­tion. The measure­ment stops when reaching either the voltage of 2.0V or the surface temper­a­ture of 80°C. The graph shows the cell surface temper­a­ture at the end and the derived average power of the experiment.

Energy Charac­ter­is­tics

How much energy can it deliver?

muRata_US18650VTC5A_energy

Power Charac­ter­is­tics

How long can it deliver the power?

muRata_US18650VTC5A_power

Thermal Charac­ter­is­tics

How hot does it get?

muRata_US18650VTC5A_thermal

The mean accura­cies give an overview of the Batemo Cell 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 0.032 V 1.2 %
Mean Temper­a­ture Accuracy 0.7 K 0.7 %
Mean Power Accuracy 0.31 W 1.2 %
Mean Energy Accuracy 0.060 Wh 1.3 %

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

Batemo Cell Report

Batemo offers a detailed report of the lithium-ion battery cell muRata US18650-VTC5A. 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