Test/review of Ansmann D 10000mAh 5030642 (Silver)

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HKJ
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Test/review of Ansmann D 10000mAh 5030642 (Silver)

Ansmann D 10000mAh 5030642 (Silver)
DSC_6735
Official specifications:


  • Nominal voltage: 1.2V
  • Max. charge voltage: 1.5V at 0.1C
  • Nominal capacity: 10000mAh
  • Minimum capacity: 9300mAh at 0.2C
  • Minimum capacity: 8500mAh at 1C
  • Max. continuous discharge current: 10A
  • Standard charge: 1000mA
  • Quick charge: 2750mAh
  • Fast charge: 5000mAh
  • Recommended charge termination: -DV=0-5mV, DT/minute=0.8..1°C, T=45-50°
  • Internal resistance:
  • Cycle life: 500 cycles
  • Self discharge: >60% charge remaining after 28 days      This is from the datasheet with the correct type number and a photo of the battery and pack saying “Low self discharge”

Ansmann%20D%2010000mAh%205030642%20(Silver)-info
Maximum temperature raise at different discharge currents: 1A:+0,9°C, 2A:+0,0°C, 3A:+2,1°C, 5A:+2,8°C, 7A:+5,2°C, 10A:+8,9°C, 15A:+14,1°C
This is high capacity D cells, the capacity is around 4 AA cells.
DSC_6709 DSC_6710
DSC_6736 DSC_6737
DSC_6738
DSC_6739
DSC_6740
Ansmann%20D%2010000mAh%205030642%20(Silver)-Capacity
There is some capacity difference, most at the start of the test after a couple of cycles it is reduced. Only one of the cell lives completely up to the rating.
Ansmann%20D%2010000mAh%205030642%20(Silver)-CapacityTime
Ansmann%20D%2010000mAh%205030642%20(Silver)-CapacityTimeHours
Ansmann%20D%2010000mAh%205030642%20(Silver)-Energy
Ansmann%20D%2010000mAh%205030642%20(Silver)-PowerLoadTime
Ansmann%20D%2010000mAh%205030642%20(Silver)-CurrentTest
Ansmann%20D%2010000mAh%205030642%20(Silver)-Charge
Conclusion
This D cell has some real capacity, but I wonder about the low self discharge.
Notes and links
How is the test done and how to read the charts
Compare to AA/AAA batteries: Alkaline/NiMH/Lithium

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

Speed4goal
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Could you charge the cells up and then come back to this thread in about 3 months and 6 months one battery at each time period. Then we will know if it’s low self discharge. If its mostly dead at the 3 months mark. No need to continue on with the 6 months one

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HKJ
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Speed4goal wrote:
Could you charge the cells up and then come back to this thread in about 3 months and 6 months one battery at each time period. Then we will know if it’s low self discharge. If its mostly dead at the 3 months mark. No need to continue on with the 6 months one

When I got them they where at 1.2V.

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

TECHBERT
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Joined: 06/22/2018 - 13:34
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I bought 30 of these Ansmann 1.2 volt D cell NiMH 10,000 mAh AKKU batteries and put 6 in the Ansmann Energy 16 plus charger. They seemed to be flat and I tested them on a multimeter and it read 0.2 volts. I charged them and the red flashing mode once per minute came on for 3 hours and after a while the charger was flashing green once per minute, I have done this 3 days in a row and before when they were on green they were cold, now on the 3rd day after 3 hours red they are on green lights and pre-charging warm.
Is this how they should be? were they on a forming charge before? I have heard that some batteries need preparing before they are fully charged.

Please, if you have any answers, clarify.

Thanks, Robert.

TECHBERT

TECHBERT
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I have figured out what I was doing wrong, I forgot to set the Multimeter at Null DCV, on there I set +or-5 and set ohm yellow knob to adjust pin guage to zero then attach the electrodes to the battery. The batteries are reading full Voltage and full Ah on DCmA 10A with the 10A socket.

Bob.

TECHBERT