Nickel-cadmium rechargeable batteries are known to have reduced capacity due to the memory effect when charging after some discharge.
It is said that after a full discharge, a full charge is required.
The capacity does not decrease when fully charged after overdischarging a nickel-cadmium rechargeable battery.
is the correct word?
So, I'm curious if overdischarge and complete discharge are the same word or interpreted differently. Do nickel cadmium batteries not lose capacity even if overdischarged?
Please share data from credible articles and sites on this.
It is not a decrease in capacity due to the memory effect, but rather a slight drop in voltage during use.
Originally, the voltage should drop slowly when discharging like red, but it charges again during discharging, and charges again during discharging... If you repeat this operation, the voltage drops slightly at some point like the blue color above.
The capacity is determined by the number of times of charging and discharging. In general, in the case of nickel cadmium or nickel hydride, the life of charging and discharging is about 500 times. Therefore, there is no need to discharge the memory to unnecessarily eliminate the memory effect.
Rather, because of it, the current capacity decreases faster.
And you should not discharge it to 0V just because it is a discharge. The discharge voltage is from 0.6 to 0.7V. Discharging more than this is bad for the battery.