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Marine battery manufacturers at the Boat Dusseldorf show highlight advancements in high-voltage and 48-volt systems designed specifically for electric propulsion in sailboats.2:02 EP Technologies offers high-energy-density NMC batteries with IP67-rated submersible protection and a manual bimetal fire-prevention system that floods cells with non-dielectric fluid at 68 degrees Celsius.6:06 The company is also developing solid-state battery technology for 12-volt and 24-volt marine applications, which provides increased safety against impact damage, overcharging, and thermal runaway compared to standard LFP batteries.10:27 GS Power, in partnership with InnoPower, produces a 48-volt, 5.3-kilowatt-hour battery housed in stainless steel for corrosion resistance, utilizing MOSFET-based BMS systems rather than traditional relays.21:31 These systems monitor individual cell voltages to detect performance trends and integrate with Raymarine and Garmin displays.19:43 Manufacturers emphasize that while BMS units manage state-of-health and safety, proper temperature control remains critical for battery longevity, with 25 to 30 degrees Celsius being the optimal operating range.12:59

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