Thanks guys for links.
Don't think relay would be good for me car battery only last 18 month's to 2 year's.
Only do 9000 miles a year tops.
The nature of a job stop start driving means relay would probably mean a flat van and pump battery 
So looking to charge battery every night if leisure battery the yeh maybe every 2 nights charging.
Thanks lee.
I do less miles than you mate and never had to bench charge
Frankybadboy will be lucky if he does 5000 in a year and i'm pretty sure he hadnt had to bench charge, bar maybe a couple of times just in case
As has been said, if you get an intelligent relay your van will never go as it will only charge the 'second' battery if your van has ample charge
Regarding chargers, ideally you dont want a trickle charger as you'll be there ages charging if you use a leisure bat
Hopefully spruce will be along soon and post a link
