Which method is used to charge nickel-cadmium (Ni-Cad) batteries?

Which method is used to charge nickel-cadmium (Ni-Cad) batteries?

Which method is used to charge nickel-cadmium (Ni-Cad) batteries? 




a. Reflex charge or constant current.
b. Constant potential.
c. Pulse potential.
d. Pulse current.



Answer: A