I’m running same motors on my 12m/39’6” power cat. I have a 48v/1,000AH pack with Winston 1,000AH cells.?
1. ?Going for 48v/600AH pack makes sense - you should be able to power your domestic loads plus propulsion OK. More is better than less. If you can find 600AH cells, you make installation simpler ?
2. I see no value motoring with a single motor - electric motors are efficient at low RPMs - only by experimenting can you determine any power savings by using only one motor.?
3 ?install as much solar as space and budget permit ?
4 ?The Chargery BMS from AliExpress is a economical solution that uses external contractors for charge bus (solar, etc.) and load bus (motors, inverter, dc/dc charger/power supply, etc.). My load bus is 500A - charge bus less. ?Chargery also has a matching shore charger and a “slow-start” module to prevent contactors from welding closed (if there is an inverter on the load bus). ?Victron makes components that communicate with each other and is an equally good solution ?
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Reuben Trane