Hi All, thanks for allowing me to join your forum, we live in shepshed leic's sorry to ask question on my first visit, we have 2003 fiat ducato 15 2.8jtd motorhome ,and i want to fit a sterling to battery charger,As my wife uses a oxygen machine 24hrs a day ,which flattens batteries very quick (2x110ah)we have a solar panel but is not enough to fully charge batteries, what i would like to know is what altenator i have fitted so i can buy the right charger, hope this is clear, time is short. regards BAZ.