Each engine two 1150 CCA gel batteries in parallel
House has two 1150 CCA batteries in parallel
Genset one 1150 CCA battery
Bow thruster 24 volt so four 1150 CCA batteries in series
So my questions are:
1)Cummins specs call for I think 1100 CCA each engine. For boat operation (local lake) in temps above 60 degrees F, do I need two 1150 CCA batteries in parallel each engine or is one sufficient.
2)For the house batteries, do I need 1150 CCA or can I go lower since I’m interested in lasting time instead of cranking amps.
3) Bow thruster is rarely used on local lake. Can I drop back to two, 12 volt batteries in series instead of the current four batteries?
Any advice is surely appreciated.