Nissan Qashqai Alternator Problems

ok so few months ago had issues with battery going flat fully charged battery would be ok a week then flat again. i have a smart charge that conditons the battery so took battery of did full condition again 10 days later flat went to charge...

My car had a start stop system failure fault. I bought a new battery but it’s still coming up with the fault.

All at the same time my AC cuts out, my Nissan connect goes blank, my power steering stops working and brakes fail. A second or two and it all comes back on. The engine keeps going. 2013 Qashqai 1.6 Diesel 360. 45,0000

Ako mi mozete objasniti rad alternatora ? Kada pokrecem svoj nissan na niskim temperaturama npr oko -4 , kad auto upali imam varijacije u naponu akumulatora ! One budu od 12,5 pa do 14,4 volti, to se stano mijenja otprilike oko 10-tak minu...

Question related to nissan Qashqai 1.6 dci 2012. If someone can explain to me the operation of the alternator? When I start my nissan at low temperatures, for example around -4, when the car starts, I have fluctuations in the battery voltag...