Test/review of Sofirn AA 2600mAh (Black-Blue)

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HKJ
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Test/review of Sofirn AA 2600mAh (Black-Blue)

Sofirn AA 2600mAh (Black-Blue)

DSC_0968

Official specifications:


  • Capacity: 2600mAh
  • Voltage: 1.2V
  • Chemistry: Ni-MH
  • Rechargeable: Yes
  • PCB Protected Board: No

Sofirn%20AA%202600mAh%20(Black-Blue)-info

Maximum temperature raise at different discharge currents: 1A:+1,6°C, 2A:+4,1°C, 3A:+7,0°C, 5A:+13,9°C, 7A:+19,6°C, 10A:+24,7°C
This is low capacity NiMH for the Sofirn brand (But high capacity for all other brands), how good are they?

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DSC_0969DSC_0970

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Sofirn%20AA%202600mAh%20(Black-Blue)-Capacity

Discharge curves are not nice, but acceptable for NiMH and capacity is around 2600mAh.

Sofirn%20AA%202600mAh%20(Black-Blue)-CapacityTime

Sofirn%20AA%202600mAh%20(Black-Blue)-CapacityTimeHours

Sofirn%20AA%202600mAh%20(Black-Blue)-Energy

Sofirn%20AA%202600mAh%20(Black-Blue)-PowerLoadTime

Sofirn%20AA%202600mAh%20(Black-Blue)-CurrentTest

Sofirn%20AA%202600mAh%20(Black-Blue)-Charge



Conclusion

These cells are much better than the 2800mAh from Sofirn, this time the rating is correct and the cells has acceptable performance.



Notes and links

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): http://lygte-info.dk/

kiriba-ru
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Could you please add LSD rating some time after?

Meanwhile in Russia: https://twitter.com/CrazyinRussia

HKJ
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kiriba-ru wrote:
Could you please add LSD rating some time after?

I do not know the rating.

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

kiriba-ru
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I mean you can make your own rating.
I think you have some brand LSD AAs, just charge them and this Sofirn and leave for a year or near. And then measure voltage.
Maybe Im asking too much, but otherwise I cant compare them with enerloops and without LSD rating test is not so usefull IMO.

Meanwhile in Russia: https://twitter.com/CrazyinRussia

HKJ
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kiriba-ru wrote:
I mean you can make your own rating. I think you have some brand LSD AAs, just charge them and this Sofirn and leave for a year or near. And then measure voltage. Maybe Im asking too much, but otherwise I cant compare them with enerloops and without LSD rating test is not so usefull IMO.

I will not do that.
To do that I would like some automatic equipment that logs battery voltage once a day on maybe 16 channels and I do not have time to make that just now.

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

EagleShield
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I think he means a easier test like recharge the cells then put them where you store your batteries and take them out maybe once a month to check the voltage so you can make a fairly estimated guess how much they have selfdischarged per month or something.

HKJ
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EagleShield wrote:
I think he means a easier test like recharge the cells then put them where you store your batteries and take them out maybe once a month to check the voltage so you can make a fairly estimated guess how much they have selfdischarged per month or something.

I will let other do that type of easy test.
What I describe about is fairly easy to make and do not need to be expansive, but it will probably take me a few days to build and that is the problem.

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