Onan 5500 dedicated starter battery setup ...

theoldwizard1 wrote:

twvette wrote:
Long story short my electric fridge, heater, etc. still drains my bank of 6V overnight to point not enough juice to turn generator over in mornings ...

Buy one of those portable Li-Ion jump packs. Cut the leads to the HD spring load jaws in the middle. Install Anderson PowerPole 120 connectors on all 4 wires.

Now get some 4 gauge back and red wire, long enough to run from the batteries to a place that it will convenient to connect the jump. Put ring terminals on one end and connect to the battery. Put another pair of Anderson PowerPole 120 on the other end.

Connect the battery pack when required, but immediately remove it once the generator starts.