What is the battery life cycle?

Hello friends,

We are looking at the vehicle for a member of my brother in the forum. 2010 and above diesel 206+ c3 207 flavor has up to 20000 budget.

While looking at the net, I saw that the batteries of the 2010-2011 or even 2012 206+ have changed. It was very interesting to me. We have always bought zero vehicles so far, the first vehicle we have changed the battery of, the opel corsa 2004 model, we changed it last week because we were constantly on the road. Otherwise he was pressing with a little starter. Opoelin had its own battery over and lasted for 9 years.

There was no indication of the reason why the battery of 2-3 year old cars have changed, but I have not had any problems in my car until now, although there is a good sound system in my car. Once the screen was on, it was weakened and it was not finished.

What are your opinions on this subject? What could be the reason for the battery change so quickly? Could battery-powered vehicles generally have anything to do with cold in the eastern regions?