Engineering Question #2185

Joaquin Cornejo, a 30 year old male from Los Angeles asks on July 25, 2004,

Why do dry cell batteries (rechargeable) need to be fully drained before they can be recharged?

viewed 13779 times

The answer

Barry Shell answered on July 25, 2004

It has to do with complicated changes in the crystalline structure of cadmium materials inside the battery. It's really only a problem with NiCd batteries. The best explanation is given by Isidore Buchmann in Vancouver, Canada.

Add to or comment on this answer using the form below.

Note: All submissions are moderated prior to posting.

If you found this answer useful, please consider making a small donation to