Hi, I'm new to this so forgive my ignorance. When we connect to 230V our fridge comes on but our battery is not charging. We have an instruction book for the Schaudt electrics but it is in German and my technical German is rusty to say the least. Does anyone know if something major is 'kaput'? And, is it possible to get the instruction book in English? I tried the website but it again seems to be in German only. Thanks for your help.