People that understand DC House electrics on boats are understandably wary about safety issues. Most boat fires are electrical, and that's just using lead!
The only non-lead chemistry any sane insurance company might cover are fully packaged and BMS protected systems from Victron, Mastervolt Lithionics etc.
If you really put a DIY system together from standard LFP prismatics like CALB or GBS, usually 100-180AH cells, plus a solid OVD/LVD from OTS parts, maybe a surveyor could be found to sign off on it.
But packs of what NMC stripped from a salvage car, separated out from all the protective electronics?
That's a Science Project, IMO needs to be done on land.
But if you are willing to be a pioneer, please let us know how it goes!
BTW decent sized 48-12V converters are not that expensive, are you looking to run a windlass or just screens, reefer & galley appliances?
The only non-lead chemistry any sane insurance company might cover are fully packaged and BMS protected systems from Victron, Mastervolt Lithionics etc.
If you really put a DIY system together from standard LFP prismatics like CALB or GBS, usually 100-180AH cells, plus a solid OVD/LVD from OTS parts, maybe a surveyor could be found to sign off on it.
But packs of what NMC stripped from a salvage car, separated out from all the protective electronics?
That's a Science Project, IMO needs to be done on land.
But if you are willing to be a pioneer, please let us know how it goes!
BTW decent sized 48-12V converters are not that expensive, are you looking to run a windlass or just screens, reefer & galley appliances?