iPhone12pro can use Xiaomi car charger. Because nickel-cadmium batteries are easy to be polarized during conventional charging, conventional constant-voltage or constant-current charging will make the electrolyte continue to produce hydrogen and oxygen gas, and its oxygen will penetrate into the negative electrode and interact with the cadmium plate to generate CdO under the action of internal high pressure, resulting in a decrease in the effective capacity of the plate.
Pulse charging generally adopts the method of charging and discharging, that is, charging for 5 seconds, then discharging for 1 second.
In this way, most of the oxygen generated by the charging process will be reduced to the electrolyte under the discharge pulse, which can greatly reduce the gas evolution, and the concentration polarization and ohmic polarization can be naturally eliminated by reducing the gas evolution.