Islander_00
New Member
Greetings to the hive mind from locked down Greece…
First post here but have been avidly reading through all available resources for some time.
Right… on with the questions…
I am in the process of refitting most electronics as well as power and distribution components on a newly acquired but rather old 37ft sailboat (1990 Moody 375 CC).
At Present:
Battery banks:
Plan:
Main Question is: 12V inverter/charger combo VS a 24V unit?
As this is a new install, now is the time to decide. Decision will also effect battery configuration...
I understand the complications of running the existing 12V devices but, the only -difficult to manage- existing consumer will be the windlass. I could always power it from engine bank and call it a day, or maybe exchanging the 12V windlass motor for a 24V one and keeping the existing cabling to the house bank…
The cable run for the inverter/charger to the house battery bank will be about 4m (+4), so not enough to justify cable savings I think..
Only other option is to go the simplest route possible and stick to a “purely” 12V system…
Thoughts??
PS. Sorry for the long post!!!
First post here but have been avidly reading through all available resources for some time.
Right… on with the questions…
I am in the process of refitting most electronics as well as power and distribution components on a newly acquired but rather old 37ft sailboat (1990 Moody 375 CC).
At Present:
Battery banks:
- 2x LA 110Ah (220Ah@12V i.e. around 100Ah@12V available) house batteries
- 2x LA 90AH (180Ah@12V) starting batteries for a Volvo D1-30B of 2006
- Original 115A Alternator connected to above starting batteries
- Old and weathered 105W Solar panel and PWM controller connected to House batteries (not enough to sustain 12V fridge, even on sunny days…)
- Unknown (not working?) shore battery charger
- New 1000W Windlass @ 12V drawing power directly from house batteries through thick 9m (+9m for return) cable run
- New compressor 40W (-ish) 12V Fridge/Freezer
Plan:
- Install a beefy isolation transformer (will probably go with Victron at around 3KW)
- Install an Inverter/charger for around 3KVA 220 VAC to support
- Induction cook top
- Microwave
- BMV 712 and shunt for battery monitoring
- Upgrade the Solar controller to a Victron mppt
- Research options for a solar arch to house around 400W-600W of solar. This being a Center Cockpit boat space on the back is somewhat challenging..
- LFP house Battery bank (looking into DIYing EVE 280 cells or similar), while keeping the LA starter bank.
- Two independent 4s1p blocks each with a single smart bms (Bluetooth 150A-200A max for 12V, something like xiaoxiang or daly smart etc.)
- -or- 8s1p if going 24V (bms options??)
Main Question is: 12V inverter/charger combo VS a 24V unit?
As this is a new install, now is the time to decide. Decision will also effect battery configuration...
I understand the complications of running the existing 12V devices but, the only -difficult to manage- existing consumer will be the windlass. I could always power it from engine bank and call it a day, or maybe exchanging the 12V windlass motor for a 24V one and keeping the existing cabling to the house bank…
The cable run for the inverter/charger to the house battery bank will be about 4m (+4), so not enough to justify cable savings I think..
Only other option is to go the simplest route possible and stick to a “purely” 12V system…
Thoughts??
PS. Sorry for the long post!!!