I'm planning several little accessories for the van, many of which will need to be operable whether the ignition is on or off. Nothing really major, just courtesy lighting and 12v sockets for charging mobile phones - for when I'm "camping" in it. And some EL Wire.

Is there a nice heavy-duty battery I should be getting (I'll need a new one anyway) which will be able to handle this without getting sniffy when it's time to start up in the morning?
wibble xx