battery when get 100

[Khurais]

is left the mobile charging over 100% effects on the battery?

Xperia Z2

[Thommo]

It won't charge more than 100% - When it gets to 100% it will stop charging then start discharging untill it gets to a certain % then start charging again

[Phy]

@Khurais you may find this article useful.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries