Thread: Anyone running a dual battery setup?

Originally Posted by TonyC

To fit a battery in front of the air box, what do you do with the air intake, that comes out of the guard and into the airbox, in the same space the battery needs to occupy.

Tony

Mine is in bits currently, but I'll see if I can get pics.

Originally Posted by drivesafe

Hi jay Tee, and the standard rule of thumb is :-

Anything that is only run while the motor is running, should be connected to the Cranking battery.

Anything that is to be run when the motor is off, should be connected to the Auxiliary battery.


BUT, with something that draws such high currents, like a winch, or a large 240vac inverter, should be connected to the cranking battery for a good reason.

It keeps the cable run for all power sources to a minimum length.

By keep the distance from each power source to a minimum length, you not only reduce the voltage drop of the whole circuit, but by keeping the voltage as high as possible, you increase the efficiency of the operation of the device being powered.


This in turn means the device does not work as hard todo the same job and this will help the operating lifespan of the device.

Pretty well word for word to my auto sparkie's explanation. He also upped the gauge of the winch cables.