Test/review of Eneloop AA BK-3MCCE 1900mAh (White) 2019

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HKJ
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Test/review of Eneloop AA BK-3MCCE 1900mAh (White) 2019

Eneloop AA BK-3MCCE 1900mAh (White) 2019
DSC_7135
Official specifications:


  • Nominal voltage: 1.2V
  • Minimum capacity: 1900mAh
  • Low self discharge: 70% capacity left after 10 years
  • Cycle life: 2100 cycles.

Eneloop%20AA%20BK-3MCCE%201900mAh%20(White)%202019-info
Maximum temperature raise at different discharge currents: 1A:+1,5°C, 2A:+3,6°C, 3A:+5,9°C, 5A:+11,3°C, 7A:+16,2°C, 10A:+21,4°C
This is a retest of the standard eneloop (Previous test is from 2016).
DSC_7105 DSC_7106
DSC_7136 DSC_7137
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Eneloop%20AA%20BK-3MCCE%201900mAh%20(White)%202019-Capacity
Fairly standard NiMH discharge curves, the capacity is not record breaking for Eneloops, but they do not self discharge and they last a long time (Except if they are over discharged).
Eneloop%20AA%20BK-3MCCE%201900mAh%20(White)%202019-CapacityTime
Eneloop%20AA%20BK-3MCCE%201900mAh%20(White)%202019-CapacityTimeHours
Eneloop%20AA%20BK-3MCCE%201900mAh%20(White)%202019-Energy
Eneloop%20AA%20BK-3MCCE%201900mAh%20(White)%202019-PowerLoadTime
Eneloop%20AA%20BK-3MCCE%201900mAh%20(White)%202019-CurrentTest
Eneloop%20AA%20BK-3MCCE%201900mAh%20(White)%202019-Charge
Eneloop%20AA%20BK-3MCCE%201900mAh%20%28White%29%202019-Pulse-1.0A-30-30-0.7V-IR
Turn a 1A load on/off makes it possible to calculate the internal resistance, here I have done it for a lot of times during a full discharge.
The reason for two curves is that one is calculate from voltage drop when switching load on (L->H), the other from voltage increase when switching load off (H->L).
Eneloop%20AA%20BK-3MCCE%201900mAh%20%28White%29%202019-LowTemp-0.5
The eneloop is supposed to work at -20°C and it does, but with reduced capacity and voltage.
Eneloop%20AA%20BK-3MCCE%201900mAh%20%28White%29%202019-LowTemp-1.0
The 1A discharge curve looks very similar to the 0.5A curve.
Note: The temperature sensor is not on the battery.
VoltageCapacity
It is usual said that NiMH batteries must be loaded to read capacity, here I have shown remaning capacity in percent based on time after a 1A load is removed. I can see from my data that one hour is not long enough for the battery to recover fully, i.e. the voltage would probably be even worse for estimating capacity after a few hours more rest.
Conclusion
The performance of the eneloop is good and it also works when it is cold.
Notes and links
I am replacing my NiMH charger test batteries, they are from 2016 and some of them has a fairly high internal resistance. Some of the bad chargers I have tested have probably increased the deterioration rate of them.
The extra data in this review is not something I will do in other reviews, except maybe a few IR curves may show up.
How is the test done and how to read the charts
Compare to other AA/AAA batteries: Alkaline/NiMH/Lithium

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

fran82
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These are china or japan made??

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raccoon city
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DSC_7140

It says Made in Japan.

fran82
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I am blind XP

Great batteries as we know.

Great review as we know.

Thanks

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arow55
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Glad you sum it up with conclusion because I can’t understand charts. Thanks.

M3CSL
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so glad that these are the batteries I own and use. Thanks for the review.

Convoy S2+ 219b triple, Astrolux FT02, Maglite 3D, Solarforce L2t

LightObsession
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Thanks for the measurements.