[David Kent @ KentKleen]

That opening question should be Would YOU be interested.....................
Fed up with cables all over your van and not knowing what fuses need to be fitted or where to fit them?
Would you like your systems battery to be charged via your van without the fear of flattening your vans battery?

1 weatherproof box.
2 cables in from your vans battery, 2 cables out to your systems battery and 4 power and earth circuits out to power your controllers, pumps etc etc.
All fused, all tidy all good quality components.
This is not a cheap 30 amp smart charge system!
Interested??
Cost will be around £70

[Ian Sheppard]

Do you mean something like this

http://www.gardinerpolesystems.co.uk/acatalog/Liquid-Logic-trade--Radio-Control-Ultimate-One-Shot-Controller--DISTRIBUTION_BOX.html

[David Kent @ KentKleen]

No this one has  split charging capacity. 

[R.C Property]

i made one without the charger option and put it on ebay to try it out, only went for £15 in the end,

[MATT BATEMAN (OWC)]

Won't this provide what you're asking for? Whatever it is you want is always going to have to be plugged into the mains.

Screw the 4 gangs to inside wall of van. Come home at night, plug other end into mains of garage/outside socket.