Xenon headlight alignment

[Olly b]

I have recently replaced the battery in my 2009 a4 B8 as well as the bulbs.
It has the factory xenons.
I find now that they are aiming quite high and getting a lot of people flashing me.
Because I changed the battery and the lights at the same time I can work out which may have caused this, the new bulbs? Or disconnecting the battery and replacing?
Maybe disconnecting the battery means now I have to realign/calibrate the lights again?

would appreciate your thoughts
Many thanks

 

[NHN]

You've moved the lenses when fitting bulbs, needs vcds to set mode, a flat surface & proper beam lense, mot bay is best, to adapt them correctly.