Sailing Uma · video

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The crew of the 48-volt electric-drive sailboat Uma upgrades their electrical system in Trondheim, Norway, to resolve chronic battery charging issues. The previous 1.2-kilowatt charger, designed for lead-acid batteries, failed to reach a full state of charge for the vessel's lithium bank, leading to inaccurate monitoring and diminished capacity.0:44 Dan replaces this unit with a 5-kilowatt Victron MultiPlus II inverter-charger, which integrates into the existing Victron network for Bluetooth monitoring and provides faster shore-power charging.2:23 Because the new unit is physically larger and handles higher current, the installation requires rerouting heavy-gauge battery cables and modifying the cockpit locker mounting base.8:24 The project also involves consolidating 12-volt, 48-volt, 120-volt, and 230-volt AC systems into a new breaker panel equipped with GFCI protection.13:10 The crew adds European-style outlets to the galley and nav desk to accommodate local standards and begins testing an induction cooktop and convection microwave to evaluate the feasibility of all-electric galley appliances on a cruising boat.14:30

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