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Author Topic: 9V NIMH battery cell and discharge rates table converted in mA  (Read 945 times)

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Online Kiriakos GR

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I do own several 9V NIMH battery cells, of different age.

Neither at the year 2025, no one of the Asian battery charger makers, him came with a product (NIMH charger), which that will offer battery capacity test automation for the 9V NIMH.

Back in time, I did a product review about alkaline battery cells, and I was have to make a peculiar load tester especially for 9V cells. 
This be able to offer adjustable range from 10 ~ 230 mA.

Nowadays, my FLUKE 8846A, this is capable to measure simultaneously voltage and current, and with TsDMMViewer I can see both graphs at my computer screen.
The only information that I has missing, this was 9V discharge rates table this be converted in mA.
As reference it is taken specifications of:
Capacity :300mAh

Nominal voltage: 8.4v
Discharge Cut-off  voltage 7V


1C = 300mA
0.5C = 150mA
0.4 = 120
0.3 = 90
0.2 = 60
0.1C = 30mA

Since 2012, any reliable testing report of 9V NIMH, this includes capacity estimate according discharge rate at 0.2C  ;)
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Online Kiriakos GR

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Re: 9V NIMH battery cell and discharge rates table converted in mA
« Reply #1 on: August 24, 2025, 05:44:14 PM »
9V 250mAh table:

1C = 250mA
0.5C = 125
0.4 = 100
0.3 = 75
0.2 = 50
0.1C = 25mA


9V 200mAh table:

1C = 200mA
0.5C = 100
0.4 = 80
0.3 = 60
0.2 = 40
0.1C = 20mA
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Offline overvolt

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Re: 9V NIMH battery cell and discharge rates table converted in mA
« Reply #2 on: August 31, 2025, 11:50:55 AM »
I think that this topic it should pointing at newest Kiriakos upcoming project.  ;)

TEC-06 Battery Capacity Tester 16W Electronic Load for 9V Block NIMH Evaluation
https://www.ittsb.eu/forum/index.php?topic=2115.0

 

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