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Efest 18650 IMR V1 Li-MN 3100mAh High Drain 20A Flat

Cena 10.89
Cena bez DPH 9.08
DPH 20.00 %
Záručná doba 24 mesiacov
Výrobca Efest
Kód produktu EFIMR3100V1
Dostupnosť na sklade
KS

Efest 18650 IMR V1 Li-MN 3100mAh High Drain 20A Flat

 

Kapacita

3100mAh

Min. Kapacita

3000mAh

Menovité napätie

3.7V

Nabíjacie napätie

4,2 ± 0,05

Zvyškové napätie

2,5V

Max. Discharge

10A /20A

Nabíjací prúd Max.

1,5A/3A (1C)

Kladný pól

Plochý (Flat Top)

Ochrana

bez ochrany

Chemické zloženie

LiNiMnCoO2

Priemer

18,25mm ± 0,1

Výška

65,30mm ± 0,1

Hmotnosť

48 g ± 1

Metóda nabíjania

CC-CV

 

 

 

Test of Efest IMR18650 3100mAh (Purple) 2014Efest IMR18650 3100mAh (Purple) 2014

DSC_6281

Official specifications:
  • Top: flat top
  • Bottom: non-protected
  • Typical Capacity: 3100mAh
  • Min capacity: 3100mAh
  • Max discharge current: 20A
  • Quick charge current: 3000mA (1C)
  • Quick discharge current: 2000mA
  • Cycle life: 300 times
  • Charge cut-off voltage: 4.2V ± 0.5V
  • Charge cut-off current: 5A
  • Initial Impedance: Max: 15mOhm
  • Discharge cut-off voltage: 3.0V
  • Temperature: discharge temperature range:-10°C—60°C, charge temperature range: 0°C—40°C
  • Storage: 1 year:-20°C—25°C, 3 months:-20°C—45°C, 1 month:-20°C—60°C
  • Size: weight: 50g, Length: 65 mm, Diameter: 18mm

Efest%20IMR18650%203100mAh%20(Purple)%202014-info

High power and high capacity in the Efest purple line of high current cells.

DSC_6279 DSC_6280

DSC_6282 DSC_6283

DSC_6284
DSC_6285

Efest%20IMR18650%203100mAh%20(Purple)%202014-Capacity

Looking at this curve I will say that 20A is a bit high for continous load, but 10A is handleded very fine.

Efest%20IMR18650%203100mAh%20(Purple)%202014-CapacityTimeHours

Efest%20IMR18650%203100mAh%20(Purple)%202014-CapacityTime

Efest%20IMR18650%203100mAh%20(Purple)%202014-Energy

Efest%20IMR18650%203100mAh%20(Purple)%202014-PowerLoadTime

I had an accident during testing and I am missing one cell in some tests. The problem was that my load did not turn off after the 20A and discharged the cell completely.

Efest%20IMR18650%203100mAh%20(Purple)%202014-TripCurrent

Efest%20IMR18650%203100mAh%20(Purple)%202014-Charge



Conclusion

The cell cannot match the ultra high current cells in power, but easily surpass them in energy at 10A. This is very good performance.

I will call it a acceptable cell.



Notes and links

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries
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