Test/review of Ansmann AA 2500mAh (Silver)

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[size=+3]Ansmann AA 2500mAh (Silver)[/size]

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Official specifications:
  • Nominal voltage: 1.2V
  • Nominal capacity: 2500mAh
  • Minimum capacity: 2400mAh at 0.2C
  • Minimum capacity: 2200mAh at 1C
  • Max. continuous discharge current: 5000mA
  • Standard charge: 250mA
  • Quick charge: 700mA
  • Fast charge: 2500mA
  • Recommended charge termination: 0..5mV, 0.8..1°C/minute, 45..50°C
  • Continuous overcharge current: <200mA no conspicuous deformation, no leakage
  • Internal impedance: <30mOhm at 1kHz for fully charged battery
  • Cycle life: >500 according to IEC standard
  • Low self discharge (LSD): >75% after 12 months at 20°C
  • Made in China

Ansmann%20AA%202500mAh%20(Silver)-info.png


Maximum temperature raise at different discharge currents: 1A:+1,5°C, 2A:+3,5°C, 3A:+6,1°C, 5A:+12,2°C, 7A:+18,2°C, 10A:+26,0°C
AA NiMH from Ansmann with fairly good capacity.



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Ansmann%20AA%202500mAh%20(Silver)-Capacity.png


The two cells match, the discharge curves looks normal for NiMH. The capacity also match the rated capacity.

Ansmann%20AA%202500mAh%20(Silver)-CapacityTime.png


Ansmann%20AA%202500mAh%20(Silver)-CapacityTimeHours.png


Ansmann%20AA%202500mAh%20(Silver)-Energy.png


Ansmann%20AA%202500mAh%20(Silver)-PowerLoadTime.png


Ansmann%20AA%202500mAh%20(Silver)-CurrentTest.png


Ansmann%20AA%202500mAh%20(Silver)-Charge.png




[size=+3]Conclusion[/size]

This looks like good NiMH batteries.



[size=+3]Notes and links[/size]

How is the test done and how to read the charts
Compare to other AA/AAA batteries: Alkaline/NiMH/Lithium
 
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