well well....
it seems linde doesnt want me to see trucks built/sold in europe
i am restricted to trucks for my dealer code for the US
the most information i could pull out of thier site was an operators manual which does not give much technical information at all

this is a 322 series truck
someone from europe that has access can help you though
is the charger a linde charger? or made by another company?
usually these trucks require an external charger and linde does not make them as far as i know of

sorry i could not help more

good luck