No, it can't do this. Both models leave the starter always connected to
the main battery. Both models allow the aux battery to assist the main
battery, provided the installer hooked up the extra wire needed if this
added function was desired. The 1315 merely adds bidirectional charging
capability while the 1314 allows only for charging from the main battery
side.

Mark

Frank Condelli wrote:

>Yes, but the more important feature of the 1315 is  that it ALWAYS chooses
>the highest voltage battery to start the vehicle with  !  For a couple bloody
>bucks more why dick around with the less featured  model ?
>
>