Test/Review of Efest IMR16340 550mAh (red) 2014

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HKJ
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Test/Review of Efest IMR16340 550mAh (red) 2014
Efest IMR16340 550mAh (red) 2014


DSC_6771

Official specifications:
  • Size: 16340.
  • Type: Li-Mn (High Drain)
  • Rated Capacity: 550mAh
  • Nominal Voltage: 3.7V
  • Peak Voltage: 4.2V
  • Cut-off Voltage: 3.0V
  • Dimensions: 16.41mm (Diameter) x 34mm (Length)
  • Rechargeable: Yes
  • Style: Flat Top

Efest%20IMR16340%20550mAh%20(red)%202014-info

This is a small high current battery.

DSC_6770

DSC_6772 DSC_6773

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DSC_6775

Efest%20IMR16340%20550mAh%20(red)%202014-Capacity

The battery works fine up to 2A, but above that the cells has problems.

Efest%20IMR16340%20550mAh%20(red)%202014-CapacityTimeHours

Efest%20IMR16340%20550mAh%20(red)%202014-CapacityTime

Efest%20IMR16340%20550mAh%20(red)%202014-Energy

Efest%20IMR16340%20550mAh%20(red)%202014-PowerLoadTime

Efest%20IMR16340%20550mAh%20(red)%202014-TripCurrent

Efest%20IMR16340%20550mAh%20(red)%202014-Charge



Conclusion

This is fairly standard performance for a good 16340 IMR cell



Notes and links

The batteries was supplied by Efest for review

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
Comparison to other LiIon batteries

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Martini
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Thanks for the review.

scdaf wrote:
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sesgum
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Thanks for the great reviews!

Desmo
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always appreciated

sixty545
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0.70 Ohm must be a typo

HKJ
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sixty545 wrote:

0.70 Ohm must be a typo

No, but it is because it is calculated between 6A and 7A where the curve drops and I always uses the worst value from the two tested batteries.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

THE_dAY
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Thank you for the review.
The previous Efest IMR16340 you tested were version 2 and they seem to perform better at the 2A.
So these V.1 look like they have similar performance to the Kinoko IMR16340 according to your comparator.
Btw, love the comparator, so very useful!