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Регистрация: 03.07.2010 Последняя активность: 10.10.2022 08:53 Адрес: Copenhagen, Denmark
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Fujitsu AA HR-3UTHC 2450mAh (Black) 2019
![]() Official specifications:
![]() Maximum temperature raise at different discharge currents: 1A:+1,0°C, 2A:+3,0°C, 3A:+5,2°C, 5A:+10,5°C, 7A:+15,8°C, 10A:+21,6°C, This is a retest, I have tested these batteries before. ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() The two cells tracks nicely and capacity looks good. ![]() ![]() ![]() ![]() ![]() ![]() ![]() Here I pulse a 1A current to measure internal resistance during discharge. Conclusion This looks like good quality NiMH batteries. 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. These will replace the EneloopPro, but I except to still use a EneloopPro as a example of an old cell. How is the test done and how to read the charts Compare to other AA/AAA batteries: Alkaline/NiMH/Lithium
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My website with reviews of charges, batteries and other stuff: http://www.lygte-info.dk/ |
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The increase in internal resistance is primarily due to the shallow discharge of nickel elements and is an integral part of the memory effect known to you. To avoid this effect, it is necessary to discharge the nickel elements as deep as possible, up to the complete zeroing of their capacity. For this, for example, you can take a suitable flashlight and wait until its bulb no longer lights up at all and give the opportunity to extend this discharge for some more time until all the remaining energy has been discharged from the battery.
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You also have to be careful not to discharge the batteries too much, that will kill them fairly fast. |
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You can also consider very harmful high currents not only during a discharge, but also during a charge, due to which evaporation of moisture from the electrolyte occurs. This fact, also caused by increased heating of the interiors of the cells, causes a violation of the composition of the electrolyte (when there is a decrease in valuable moisture), followed by a deterioration of all characteristics. |
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Модератор своих разделов
Регистрация: 03.07.2010 Последняя активность: 10.10.2022 08:53 Адрес: Copenhagen, Denmark
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Yes, I have four exactly the same batteries from Fuji '2450', and also have Japanese eneloop Panasonic AA '2500' & AAA '750' and '1000', so I made a regular lamp box specially for their full discharge, which I used From a failed charger
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