Ok, this years modification - Dual battery setup! I am after any recommendations and the differences between the many models, if any? I read up on the 'Kombi DT90' on someone else's post and it all sounds good and well. But I'm sure if i go down to the plethora of 4wD shops they will try and sell me one of theres. are there many differences? Are there setups that kombi drivers prefer to use? End of the day i just want something to power my 12v stuff when I'm parked up. and start the engine ok when i go to take off. why else would you need one? What size aux battery do i need? Are they easy to rig up yourself? I'm a sparky..... shouldn't have to much drama..... but then again I'm time poor and can't be bothered with any hassle. Anyone?