BAK Battery N21700CG-50

Cell OriÂgin | purÂchased on free market |

Cell ForÂmat | 21700 |

DimenÂsions | 21.3 x 70.6 mm |

Weight | 68.2 g |

CapacÂiÂty^{[defÂiÂnÂiÂtion]}^{[close]}
The nomÂiÂnal capacÂiÂty origÂiÂnates from the manÂuÂfacÂturÂerâ€™s data sheet, if availÂable. When the data sheet is unavailÂable, the nomÂiÂnal capacÂiÂty is estiÂmatÂed. BateÂmo meaÂsured the C/10 capacÂiÂty by disÂchargÂing the cell at an ambiÂent temÂperÂaÂture of 25Â°C from 100% with a conÂstant curÂrent of 0.50A (0.1C) until reachÂing the voltÂage of 2.5V. The therÂmal boundÂary conÂdiÂtion is free convection. |
nomÂiÂnalâ€‚5.00 Ah C/10â€‚4.86 Ah |

CurÂrent^{[defÂiÂnÂiÂtion]}^{[close]}
All quanÂtiÂties are meaÂsureÂment results of the BateÂmo batÂtery labÂoÂraÂtoÂry. The conÂtinÂuÂous curÂrent is the highÂest curÂrent that comÂpleteÂly disÂcharges the cell withÂout over-heatÂing it. ThereÂfor, the cell is disÂcharged from 100% state of charge at an ambiÂent temÂperÂaÂture of 25Â°C with a conÂstant curÂrent until reachÂing a residÂual state of charge of 10% and either the voltÂage of 2.5V or 90% of the maxÂiÂmum surÂface temÂperÂaÂture of 54Â°C. The peak curÂrent is the curÂrent the cell can delivÂer for 5 minÂutes. ConÂseÂquentÂly, the cell is disÂcharged from 100% SOC at an ambiÂent temÂperÂaÂture of 25Â°C with a conÂstant curÂrent until reachÂing either the voltÂage of 2.5V or the surÂface temÂperÂaÂture of 60Â°C after 5 minÂutes. The therÂmal boundÂary conÂdiÂtion is free conÂvecÂtion. These operÂaÂtional conÂdiÂtions might be outÂside the specÂiÂfiÂcaÂtion of the cell manufacturer. |
conÂtinÂuÂousâ€‚8.4 A peakâ€‚19.3 A |

EnerÂgy^{[defÂiÂnÂiÂtion]}^{[close]}
BateÂmo meaÂsured the C/10 enerÂgy by disÂchargÂing the cell at an ambiÂent temÂperÂaÂture of 25Â°C from 100% with a conÂstant curÂrent of 0.50A (0.1C) until reachÂing the voltÂage of 2.5V. The therÂmal boundÂary conÂdiÂtion is free convection. |
C/10â€‚17.7 Wh |

PowÂer^{[defÂiÂnÂiÂtion]}^{[close]}
All quanÂtiÂties are meaÂsureÂment results of the BateÂmo batÂtery labÂoÂraÂtoÂry. The mean conÂtinÂuÂous powÂer is the highÂest powÂer that comÂpleteÂly disÂcharges the cell withÂout over-heatÂing it. ThereÂfore, the cell is disÂcharged from 100% state of charge at an ambiÂent temÂperÂaÂture of 25Â°C with a conÂstant curÂrent until reachÂing a residÂual state of charge of 10% and either the voltÂage of 2.5V or 90% of the maxÂiÂmum surÂface temÂperÂaÂture of 54Â°C. The peak powÂer is the powÂer the cell can delivÂer for 5 minÂutes. ConÂseÂquentÂly, the cell is disÂcharged from 100% SOC at an ambiÂent temÂperÂaÂture of 25Â°C with a conÂstant curÂrent until reachÂing either the voltÂage of 2.5V or the surÂface temÂperÂaÂture of 60Â°C after 5 minÂutes. The therÂmal boundÂary conÂdiÂtion is free conÂvecÂtion. These operÂaÂtional conÂdiÂtions might be outÂside the specÂiÂfiÂcaÂtion of the cell manufacturer. |
conÂtinÂuÂousâ€‚29.1 W peakâ€‚68.6 W |

EnerÂgy Density^{[defÂiÂnÂiÂtion]}^{[close]}
The enerÂgy denÂsiÂties result from the C/10 enerÂgy, the cell weight and the cell volume. |
graviÂmetÂricâ€‚260 Wh/kg volÂuÂmetÂricâ€‚704 Wh/l |

PowÂer Density^{[defÂiÂnÂiÂtion]}^{[close]}
The powÂer denÂsiÂties result from the peak powÂer, the cell weight and the cell volume. |
graviÂmetÂricâ€‚1.01 kW/kg volÂuÂmetÂricâ€‚2.73 kW/l |

## Batemo Cell

The BateÂmo Cell of the lithiÂum-ion batÂtery cell BAK BatÂtery N21700CG-50 is a high-preÂciÂsion, physÂiÂcal cell modÂel with globÂal validÂiÂty. As a digÂiÂtal twin it seamÂlessÂly inteÂgrates into your research, develÂopÂment and batÂtery anaÂlytÂics by basÂing your deciÂsions on simÂuÂlaÂtions. See the details to learn more about the feaÂtures and capaÂbilÂiÂties of the BateÂmo Cell. BateÂmo demonÂstrates the accuÂraÂcy and validÂiÂty of the BateÂmo cell by comÂparÂing batÂtery simÂuÂlaÂtion and meaÂsureÂment data in the range givÂen below. ValÂiÂdaÂtion is extenÂsive, experÂiÂmenÂtal charÂacÂterÂiÂzaÂtion covÂers the total operÂaÂtional area of the cell: At low and high temÂperÂaÂtures, up to the maxÂiÂmal curÂrent and in the whole state of charge range.

State of Charge Range | 0 â€¦ 100% |

CurÂrent Range^{[defÂiÂnÂiÂtion]}^{[close]}The curÂrent range are the elecÂtriÂcal curÂrent limÂits as used in the BateÂmo batÂtery labÂoÂraÂtoÂry. Please see the BAK BatÂtery N21700CG-50 data sheet for the preÂcise defÂiÂnÂiÂtion of the curÂrent safe area of operÂaÂtion of the cell. |
-25 A disÂcharge â€¦ 10 A charge (-5.0C â€¦ 2.0C) |

VoltÂage Range^{[defÂiÂnÂiÂtion]}^{[close]}The voltÂage range are the elecÂtriÂcal voltÂage limÂits as used in the BateÂmo batÂtery labÂoÂraÂtoÂry. Please see the BAK BatÂtery N21700CG-50 data sheet for the preÂcise defÂiÂnÂiÂtion of the voltÂage safe area of operÂaÂtion of the cell. |
2.5 â€¦ 4.2 V |

TemÂperÂaÂture Range^{[defÂiÂnÂiÂtion]}^{[close]}The temÂperÂaÂture range are the therÂmal limÂits as used in the BateÂmo batÂtery labÂoÂraÂtoÂry. Please see the BAK BatÂtery N21700CG-50 data sheet for the preÂcise defÂiÂnÂiÂtion of the temÂperÂaÂture safe area of operÂaÂtion of the cell. |
-20 â€¦ 60 Â°C |

MoreÂover, the BateÂmo Cell valÂiÂdaÂtion will be fulÂly transÂparÂent. The BateÂmo Cell Data conÂtains the raw meaÂsureÂment and simÂuÂlaÂtion data. For all experÂiÂments the voltÂage, temÂperÂaÂture, powÂer and enerÂgy accuÂraÂcies are calÂcuÂlatÂed. This allows straight-forÂward evalÂuÂaÂtion and analyÂsis of the BateÂmo Cell validÂiÂty. The graphs show a selecÂtion of charÂacÂterÂisÂtic data of the cell BAK BatÂtery N21700CG-50 to evalÂuÂate the cell perÂforÂmance. The preÂdicÂtion of the BateÂmo Cell is includÂed as soon as the BateÂmo Cell is finished.

**DisÂcharge CharÂacÂterÂisÂtics**: The elecÂtriÂcal and therÂmal disÂcharge behavÂior is strongÂly nonlinear.**Pulse CharÂacÂterÂisÂtics**: The shape of difÂferÂent curÂrent pulsÂes changes strongly.**EnerÂgy CharÂacÂterÂisÂtics**: The graph visuÂalÂizes how much enerÂgy the cell can delivÂer when operÂatÂed at difÂferÂent powers.**PowÂer CharÂacÂterÂisÂtics**: The more powÂer the cell supÂplies, the shortÂer it can delivÂer the power.**TherÂmal CharÂacÂterÂisÂtics**: The therÂmal lossÂes heat up the cell the more, the highÂer the depletÂed powÂer is.

^{[show experÂiÂment defÂiÂnÂiÂtions]}^{[close]}

**DisÂcharge CharÂacÂterÂisÂtics**

The cell is disÂcharged from 100% SOC with difÂferÂent conÂstant curÂrents at difÂferÂent ambiÂent temÂperÂaÂtures. The therÂmal boundÂary conÂdiÂtion is free conÂvecÂtion. The meaÂsureÂment stops when reachÂing either the voltÂage of 2.5V or the surÂface temÂperÂaÂture of 60Â°C.

**Pulse CharÂacÂterÂisÂtics**

The cell is disÂcharged from 100% SOC with curÂrent pulsÂes folÂlowed by no-load phasÂes at difÂferÂent ambiÂent temÂperÂaÂtures. The therÂmal boundÂary conÂdiÂtion is free conÂvecÂtion. The meaÂsureÂment stops when reachÂing either the voltÂage of 2.5V or the surÂface temÂperÂaÂture of 60Â°C. The graph shows a zoomed view of the meaÂsureÂment to visuÂalÂize one of the pulses.

**EnerÂgy CharÂacÂterÂisÂtics**

The cell is disÂcharged from 100% SOC with difÂferÂent conÂstant curÂrents at 25Â°C. The therÂmal boundÂary conÂdiÂtion is free conÂvecÂtion. The meaÂsureÂment stops when reachÂing either the voltÂage of 2.5V or the surÂface temÂperÂaÂture of 60Â°C. The graph shows the derived exchanged enerÂgy and averÂage powÂer of the experiment.

**PowÂer CharÂacÂterÂisÂtics**

The cell is disÂcharged from 100% SOC with difÂferÂent conÂstant curÂrents at 25Â°C. The therÂmal boundÂary conÂdiÂtion is free conÂvecÂtion. The meaÂsureÂment stops when reachÂing either the voltÂage of 2.5V or the surÂface temÂperÂaÂture of 60Â°C. The graph shows the derived experÂiÂment duraÂtion and averÂage powÂer of the experiment.

**TherÂmal CharÂacÂterÂisÂtics**

The cell is disÂcharged from 100% SOC with difÂferÂent conÂstant curÂrents at 25Â°C. The therÂmal boundÂary conÂdiÂtion is free conÂvecÂtion. The meaÂsureÂment stops when reachÂing either the voltÂage of 2.5V or the surÂface temÂperÂaÂture of 60Â°C. The graph shows the cell surÂface temÂperÂaÂture at the end and the derived averÂage powÂer of the experiment.

The mean accuÂraÂcies and supÂportÂed simÂuÂlaÂtion tools are pubÂlished as soon as the BateÂmo Cell is finished.

## Batemo Cell Data

BateÂmo offers an extenÂsive, experÂiÂmenÂtal charÂacÂterÂiÂzaÂtion of the lithiÂum-ion batÂtery cell BAK BatÂtery N21700CG-50. The data conÂtains meaÂsureÂment results in the total operÂaÂtional area of the cell. The descripÂtions and graphs below explain and show the availÂable meaÂsureÂments. The BateÂmo Cell ViewÂer allows easy and fast analyÂsis, evalÂuÂaÂtion and comÂparÂiÂson of the data. See the details to learn more.

### Constant Currents

The cell is disÂcharged from 100% SOC or charged from 0% SOC with difÂferÂent conÂstant curÂrents at difÂferÂent ambiÂent temÂperÂaÂtures. The therÂmal boundÂary conÂdiÂtion is free conÂvecÂtion. The meaÂsureÂment stops when reachÂing either the voltÂage of 2.5V or 4.2V or the surÂface temÂperÂaÂture of 60Â°C. The graph shows for which ambiÂent temÂperÂaÂtures and chargÂing and disÂchargÂing conÂstant curÂrents meaÂsureÂments are available.

### Pulse Currents

The cell is disÂcharged from 100% SOC or charged from 0% SOC with curÂrent pulsÂes folÂlowed by no-load phasÂes at difÂferÂent ambiÂent temÂperÂaÂtures. The therÂmal boundÂary conÂdiÂtion is free conÂvecÂtion. The meaÂsureÂment stops when reachÂing either the voltÂage of 2.5V or 4.2V or the surÂface temÂperÂaÂture of 60Â°C. The graph shows for which ambiÂent temÂperÂaÂtures and pulse curÂrents meaÂsureÂments are available.

### Power Profiles

The cell delivÂers a typÂiÂcal powÂer proÂfile from 100% SOC at difÂferÂent ambiÂent temÂperÂaÂtures. The therÂmal boundÂary conÂdiÂtion is free conÂvecÂtion. The meaÂsureÂment stops when reachÂing either the voltÂage of 2.5V or the surÂface temÂperÂaÂture of 60Â°C. The table sumÂmaÂrizes for which ambiÂent temÂperÂaÂtures the proÂfile is available.

AmbiÂent Temperature | AvailÂable |
---|---|

-20 Â°C | |

0 Â°C | |

25 Â°C | |

40 Â°C |

## Batemo Cell Report

BateÂmo offers a detailed report of the lithiÂum-ion batÂtery cell BAK BatÂtery N21700CG-50. The report covÂers all imporÂtant aspects about the cell. This inforÂmaÂtion greatÂly helps you to furÂther evalÂuÂate and comÂpare the cell. It is a proÂfound basis for your deciÂsions conÂcernÂing your batÂtery sysÂtem design. See the details to learn more.

PerÂforÂmance Overview | |

Cell ExteÂriÂor | |

Cell InteÂriÂor | |

SafeÂty Features | |

ElecÂtrode MicrostrucÂture and Material |