Sailing Uma · video

What this video covers

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

More from Sailing Uma

We Ditched Our Steering Wheel (And Built Something Better) | Step 496Sep 2026We're Finally Setting Sail Again!Sep 20264 Hours to Rig Solar for an 8-Month Solo CircumnavigationSep 2026Solar Sponsor Backed Out Before Sailing Around the World !Sep 2026

From Sailing Uma — see the channel’s boat, crew, and every analyzed video.

The Sailing Directory Newsletter

One email with the fleet's best finds — the moments, boats, and stories worth your watch time. Enter your own address to get your own copy.