Originally Posted by Lou452
Well sure on a new boat design with an unlimited budget. Hybrid is more practical. But you are not going to replace a keel with batteries on a retro fit.
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Batteries in a keel sump are a good idea from a weight and location perspective but a HORRIBLE idea from an electrical perspective.....
Batteries & water/extremely high moisture, bread crumbs, sand & dust rtc. never make a good mix. Some of the worst engines and battery banks I work on are below cockpit sole level. Other than an engine room a keel sump is the last place I would purposely design batteries to fit...
Also in colder climates with cold water or early or late in the season you can literally cut your capacity by 1/3 or more due to temps.. Batteries are rated at 80F and at 50F, or colder, will not put up the same Ah capacity....