NiCd Nickel Cadmium Battery Memory Effect

- details of the memory effect associated with nickel cadmium or Nicad / NiCd batteries and how to avoid it & repair cells that exhibit the memory effect.

There is a lot of talk with Nickel Cadmium batteries about the memory effect, and whether it is of any importance to the average user. The NiCad memory effect was discovered when satellites started to use Nickel cadmium batteries. In this application these NiCd batteries were repeatedly partially discharged. Soon it was discovered that their overall capacity was reduced as they "remembered" the amount by which they were normally discharged.

For most normal applications it appears that the NiCd memory effect is not a major issue, although if the cell is run through a complete cycle occasionally, ensuring that it is completely discharged. If the cells are contained within a larger battery, it is helpful to discharge them separately (if possible) as this will ensure that no individual cells become reverse charged as some cells will contain slightly more charge than others. By performing the occasional complete discharge / charge cycle this may help reduce the NiCd memory effect if it is suspected.


<< Previous   |   Next >>


Share this page


Want more like this? Register for our newsletter






Making light work of 'wireless wires' for the Internet of Things Maxine Hewitt | Alpha Micro Components
Making light work of 'wireless wires' for the Internet of Things
Maxine Hewitt of Alpha Micro Components looks at how ready designed and built RF modules can help bring connected products for the Internet of Things to market faster.
Training
Online - Effective Spectrum Analyzer Measurements
Learn how to make spectrum analyzer measurements at RF and microwave frequencies

More training courses










Radio-Electronics.com is operated and owned by Adrio Communications Ltd and edited by Ian Poole. All information is © Adrio Communications Ltd and may not be copied except for individual personal use. This includes copying material in whatever form into website pages. While every effort is made to ensure the accuracy of the information on Radio-Electronics.com, no liability is accepted for any consequences of using it. This site uses cookies. By using this site, these terms including the use of cookies are accepted. More explanation can be found in our Privacy Policy