Test/review of Eneloop AAA BK-4MCCE 750mAh (White) 2019

Batteries and Chargers Rechargeable Batteries
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Eneloop AAA BK-4MCCE 750mAh (White) 2019







Official specifications:

  • Nominal voltage: 1.2V

  • Minimum capacity: 750mAh

  • Low self discharge: 70% capacity left after 10 years

  • Cycle life: 2100 cycles.


Maximum temperature raise at different discharge currents: 1A:+2,3°C, 2A:+5,3°C, 3A:+7,9°C, 5A:+12,1°C

The newest generation Eneloop AAA cells.























The two cells tracks nicely and discharge characteristic as expected for NiMH.































Internal resistance calculated by pulsing 0.5A on/off during a full discharge.







Conclusion



There is not much to say about eneloop batteries, they work and they last a long time.







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

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I’ve started using eneloop lites in aaa. They are rated at 550mah and 3000 cycles. Any chance of testing them?

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Yes.

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Thanks.

5

Thanks for re-reviewing these and the AA ones, HKJ.

It’s good to know that the (Japanese) Eneloops are still a good choice.